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Austin Wang ddd4a01bc5 Bump version to 0.64.22 (#9442 )

2026-08-03 00:14:42 -07:00

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Changelog

All notable changes to cmux are documented here.

[0.64.22] - 2026-08-03

Fixed

Fix a crash seconds after launch on Intel Macs; cmux is now the only process-wide crash handler, and embedded GhosttyKit no longer links Ghostty's native Sentry initializer (#9436)
Fix cmux ssh <host> failing immediately with a shell syntax error from the generated startup script (#9425) -- thanks @KousukeUchiyama for the report!
Clear Dock notifications when you focus the pane that raised them (#9418)
Keep a restored Claude agent on its own account instead of falling back to the ambient one (#9419) -- thanks @seanyoungberg for the report!
Stop bash shell integration printing cannot overwrite existing file on every prompt under set -o noclobber (#9420) -- thanks @8bit-void for the report!
Fail closed when close or respawn-pane is given an explicit --surface that no longer exists, instead of acting on a different live surface (#9422) -- thanks @PhilipPinckaers for the report!

Thanks to 5 contributors!

[0.64.21] - 2026-08-02

Added

Native iPhone and iPad Simulator panes, with their own commands and automation (#7857)
First-class Mosh transport for remote workspaces (#8442)
Workspace-wide terminal font zoom on Cmd+Ctrl+= / Cmd+Ctrl+- / Cmd+Ctrl+0 (#8791), and per-tab zoom now persists across restarts (#8543)
Cmd+Shift+T reopens the last closed item (#9132)
Cmd+[ and Cmd+] traverse global workspace focus history, and pane cycling becomes rebindable (#9329) -- thanks @azooz2003-bit! -- alongside a workspace-only focus history setting (#8654)
Move active surfaces between panes with automatic directional splits (#8764); goto_split:previous and goto_split:next cycle through every pane with wrapping (#2639) -- thanks @mykmelez!
Dock panes persist across session restore (#8690), with full Dock surface runtime parity (#8782)
Reopen closed workspaces with sticky repo identity (#8841)
Target browser profiles from the CLI (#8874), and Command-clicked HTML files render in browser panes (#9096)
Sidebar account and mobile pairing controls (#8354); sidebar metadata renders Markdown links (#8663) -- thanks @djova!
Notification feed read state is a leading swipe with mark-unread (#8868) -- thanks @azooz2003-bit!
Idle background agents hibernate under critical memory pressure even when routine Agent Hibernation is off (#9090)
cmux restore runs without a shell (#9265)
iOS (beta): stream Mac browser panes to the phone, interactive and pixel-perfect, with dialogs mirrored (#8298) -- thanks @azooz2003-bit!
iOS (beta): chronological notification feed (#8210) -- thanks @azooz2003-bit!
iOS (beta): launch agent workspaces straight from the task composer (#7670)
iOS (beta): Tailscale connection method opt-in with QR-authorized pairing (#9247) -- thanks @azooz2003-bit!
iOS (beta): haptic feedback setting (#8797), Open Folders on Tap (#8524), unified animated toasts (#8376), and workspace identity customization (#8636) -- thanks @azooz2003-bit!

Changed

Workspace initial commands launch through your login shell (#8801) -- thanks @azooz2003-bit! -- and auto-resume uses the normal terminal shell (#8837)
iOS (beta): the phone-to-Mac transport is rebuilt on one connectivity authority, with authenticated discovery, named disconnect reasons, and relay-credential rollover (#9284, #8840, #8716, #8494) -- thanks @azooz2003-bit!
iOS (beta): terminal scrolling is local and smooth on screen-anchored render grids (#8860) -- thanks @azooz2003-bit!
iOS (beta): state sync v2 replaces the invalidate-and-refetch loop with per-record deltas (#8284) -- thanks @azooz2003-bit!
iOS (beta): onboarding is rebuilt around a live agent handoff (#8418), as a swipeable tour (#9158) with a Game of Life backdrop on every page (#8880) -- thanks @azooz2003-bit!
iOS (beta): removing a Mac from a phone hides it for that phone only, instead of deleting it everywhere (#8760, #8778) -- thanks @azooz2003-bit!

Fixed

Fix leaked openThread loops burning ~90% of cmux idle CPU (#8851)
Fix workspace-switch renderer freezes (#8793), reclaim hidden Ghostty renderer memory (#8998), and fix the Vault sidebar beachball at large session counts (#8680)
Fix Vim Mode cursor and selection rendering (#8995)
Fix TextBox IME composition rendering (#8688)
Fix zsh prompt wrap spacer lines by letting Ghostty own prompt layout (#8964)
Fix Settings and main window zombies under AeroSpace (#8513) -- thanks @fml09!
Fix a Debug-build crash on macOS 26.5 from non-finite sidebar divider coordinates (#9156) -- thanks @oscarbrey!
Fix Mermaid diagrams double-scaling under viewer zoom (#8914), restore the focused-read indicator after a surface-scoped mark-read (#8927), keep Pi launch arguments when resuming a restored session (#8912), and import appearance at Settings store init instead of live-applying it (#8913) -- thanks @ejc3!
Notify only after the Pi agent settles (#8574) -- thanks @mrohan-sq!
Tear down remote daemon PTY sessions once (#8643) -- thanks @ejc3! -- and support respawn-pane in the Go relay tmux compatibility layer (#8660) -- thanks @bencollins2!
Exclude .attrib from watched filesystem events (#8659) -- thanks @varomorf!
Preserve surface IDs in workstream events (#8703) -- thanks @revanthreddy-hai!
Stop the sidebar PR poller from re-downloading every repo's full PR list on each poll (#8521) -- thanks @joshfree!
Restore Codex (#9370), Kimi Code (#8584), Grok (#9382), and Pi (#9399) sessions across relaunch, and stop duplicate agent resumes (#8619)
ssh-tmux: fix focus after single-pane promotion (#9020), named-key encoding for the remote TERM (#9273), and terminal replies leaking into reattached panes (#9272); fix workspace shortcuts from hosted tmux terminals (#8621)
Fix SSH relay deadlock after app restart (#9105), stale SSH workspace connection status (#9085), remote PTY PATH inherited from cmuxd (#8677), and login-shell resolution before terminal spawn (#8681)
Fix sidebar reopen cutoff render (#8626), row clipping during height-changing reorder (#9189), idle layout livelock (#8532), and status URL clicks (#8528)
Fix Dock paste routing to the selected terminal (#9112), Dock terminal working-directory inheritance (#8691), and Cmd-click link opening in Dock terminals (#8594)
Browser: fix navigation for terminal-wrapped URL pastes (#8601), automation recovery after load failures (#8548), partial blank screenshots (#9281), and blurred Google Sheets canvas rendering (#8697)
Fix inline code escaping in the Markdown viewer (#9274) and composer attachment thumbnail re-rasterization (#8817)
Fix renderer presentation for background-created surfaces (#8540) and stale semantic prompts duplicating inline TUI frames (#9275)
Fix workspace group anchor numbering (#9176); closing a group's anchor keeps the group instead of scattering its members to the root (#8925)
Preserve workspace IDs across session restore (#8695) and restored resume workspace titles (#8687); fit same-display restored windows to visible bounds (#8675)
Fix a DispatchWorkItem chain stack overflow (#8615) and subprocess pipe descriptor leaks (#9187)
iOS (beta): preserve terminal input ordering under fast typing (#8682), scroll position across mid-stream verified replays (#9032), and keyboard focus after the photo picker (#9287) -- thanks @azooz2003-bit!
iOS (beta): fix a startup crash from sentry-init racing environ mutation (#9238) and TestFlight crash paths (#9034)
iOS (beta): fix workspace-list scroll stutter from live updates (#9139), and make the notification feed scroll fast with thousands of items (#9141) -- thanks @azooz2003-bit!

Thanks to 13 contributors!

[0.64.20] - 2026-07-19

Added

Native AppKit workspace sidebar, now on by default: faster scrolling, precise hover and selection, and full settings fidelity (#8270, #8433, #8366, #8390, #8415, #8432, #8450) -- thanks @azooz2003-bit!
Browser Design Mode: visually edit pages in the browser pane, annotate elements, and hand the changes to an agent (#8034, #8393)
Forward mouse input to TUI applications running in the terminal (#7759)
Surface and workspace reorder shortcuts (#8080)
Session content width setting, and the previous width ceiling is removed (#8222, #8338)
Attach images to todos (#8117) -- thanks @azooz2003-bit!
OpenCode: Fork Conversation from the tab context menu (#8140)
Resize browser pane viewports (#8072)
CLI: cmux ssh accepts an initial remote command (#8439)
Share native SSH connections per host (#8308)
Notify on fatal Codex turn errors (#8170)
iOS (beta): files gallery with folders, previews, and a streaming viewer (#8287) -- thanks @azooz2003-bit!

Changed

Update pill installs are causal and fail visibly instead of silently (#8375)
The sidebar scroll indicator shows only while scrolling (#7976)
Group cmux TUI context menu actions (#8225)
Reap the persistent SSH daemon when its workspace closes (#8073)
Tighten terminal textbox top spacing (#8322)

Fixed

Preserve Codex YOLO mode across session restore and resume repair (#8133, #8045)
Preserve Pi sessions after workspace restore (#7628) -- thanks @silouanwright!
Fix Pi and OMP fork actions in tab context menus (#8173)
Fix Cmd-click for soft-wrapped URLs (#8110)
Fix typing latency from title churn (#8084, #8155)
Fix a sidebar scroll layout livelock (#8211) and sidebar GitHub polling regressions (#8226, #8190)
Replace per-row sidebar hover reconcilers with a single pointer owner (#8067) -- thanks @azooz2003-bit!
Fix Dock split rendering and shortcut routing (#8142)
Fix tmux mirror pane sizing and divider drag synchronization (#7996) -- thanks @ejc3!
Fix new-surface targeting and tab rename for remote tmux panes (#8403, #8404); fix ssh-tmux lifecycle and window-focus routing (#8405, #8402)
SSH: clear the auth marker after successful startup (#8410); fix the Ghostty SSH wrapper path in embedded app bundles (#8109)
Coalesce terminal resizes during split-divider drags (#8240)
Fix interaction paths in capped session panes (#8250)
Fix automatic terminal top inset (#8168)
Fix Files panel contrast across appearances (#8290)
Fix inconsistent table border thickness (#8193)
Fix a visible popover resize crash (#8115) -- thanks @azooz2003-bit! -- and update-popover resize reentrancy (#8195)
Bound overflowing confirmation dialog content (#8296)
Fix Settings shortcut display for legacy overrides (#8091)
Browser: fix Space key handling (#8079), numeric eval formatting (#8077), and wedged automation recovery (#8094)
iOS (beta): authenticated Iroh transport with cold-start retries and stale-session recovery (#7908, #8181, #8286, #8196, #8424) -- thanks @azooz2003-bit!
iOS (beta): match terminal themes across chrome and live reloads (#7919)
iOS (beta): smooth workspace-list scrolling with exact row heights (#8186); fix reconnect and build isolation (#8299) -- thanks @azooz2003-bit!

Thanks to 5 contributors!

[0.64.19] - 2026-07-14

Fixed

Fix overflowed tab bar scrolling to the wrong place, right-edge tabs hiding their close buttons, and a misaligned active-tab indicator (#8071)
Preserve the Claude Code permission mode when restoring, resuming, or forking a session, including interactively chosen auto-accept/plan/bypass modes; stop a one-word prompt after a boolean flag from being replayed on resume (#8070)

Thanks to 1 contributor!

@austinywang

[0.64.18] - 2026-07-14

Added

Saved workspace layouts: capture the current split arrangement as a named layout, reopen it from the + menu, and set a default layout for new workspaces (#7414, #7354) -- thanks @azooz2003-bit!
Fork Conversation from an agent terminal's context menu into a new split, tab, or workspace (#7259)
Manual SSH reconnect: press Enter in a disconnected pane, or use the Reconnect Pane menu (#7250) -- thanks @0xJord4n!
Remember and restore window position and size per monitor configuration (#7477) -- thanks @mxschmitt, and @kojitakemoto for the report!
Rename workspaces inline by double-clicking their sidebar row (#7395)
Per-pane Full Width Tab mode via the command palette or tab context menu (#7425) -- thanks @azooz2003-bit!
Pane border color settings, including a distinct color for the active pane (#7239)
Sleepy Mode: a menubar screensaver that keeps your Mac awake (#6740)
Native Translate Selection in the terminal context menu (#7510) -- thanks @timothyliu!
Automatic compression of cold terminal scrollback to reduce memory use (#7758)
A coordinated memory-pressure response that reclaims hidden terminal renderers (#7496, #7050)
Campfire agent support (#5813) -- thanks @NishantJoshi00!
Ollama agent support: detection, turn notifications, and relaunch resume (#7907)
Kimi Code hook integration via cmux hooks setup (#7201) -- thanks @liruifengv!
Updated Pi hook integration and closed oh-my-pi (omp) gaps (#7008, #7568)
Per-category agent notification settings, gated on genuinely background work (#7129)
Workspace notification submenu (#7263) and a notifications.suppressOnlyFocusedSurface setting (#6893)
Bridge Claude Code's PushNotification tool into cmux notifications (#7385)
Durable tab deep links that survive app restarts (#5769)
Terminal tabs show the active agent's brand icon in a static slot (#7607)
Browser: HTTP basic-auth prompt (#2500) -- thanks @lucaspiritogit!
Browser: proceed-anyway option on invalid TLS certificates (#3711) -- thanks @deftdawg!
Browser: Arc cookie import (#7224)
TextBox (beta): configurable submit actions, and the last-used mode is remembered (#6656, #8008)
Smooth Vim and Emacs navigation in file viewers (#7921)
Zoom shortcuts for text file previews (#7157) -- thanks @Nauxie!
Open file:// links from the terminal in the OS default app (#7122)
Entrypoints to create empty workspace groups (#7061) -- thanks @azooz2003-bit!
CLI: cmux ssh-session-attach --split anchors in the target workspace (#7376); shorter unknown-command errors with suggestions (#7329)

Changed

Settings opens in a reliable AppKit-owned window with modern chrome and a restored sidebar toggle (#7783, #8015, #8047)
Remote tmux mirroring (beta) mirrors into the current window by default; --new-window keeps a dedicated window (#7264) -- thanks @0xJord4n!
Remote tmux mirroring (beta): mirror sessions as native workspaces (#7406); exact feed-forward pane sizing, live pane headers, and an active-pane indicator (#7315) -- thanks @ejc3!
Remote tmux mirroring (beta): a friendly install hint when the remote has no tmux (#7368), and a clear error below the tmux 3.2 minimum (#6755) -- thanks @mxschmitt!
Follow live macOS light/dark switches in system appearance mode (#7206) -- thanks @Diabl0269, and @gupsammy for the report!
Updates now install the newest available version at install time (#6853); Sparkle 2.9.3 stops auto-update from killing running agents on macOS 26 (#6678)
The new-workspace (+) dropdown is reorganized into explicit sections (#7709)
Notification popover leads with workspace names (#7769); the sidebar shows more notification content (#7965)
Suppress codex's blocking startup update prompt on cmux-driven resumes (#7222)
Continue a handed-off Safari sign-in in the default browser (#7805); allow account switching after native sign-in (#7146)
Move CLI socket command handling off the main thread (#7357)
Open local HTML previews without stealing focus (#6717)
Preserve plain ANTHROPIC_MODEL inside cmux so Opus keeps the Max-plan 1M window (#7059)

Fixed

Fix runaway scrolling with high-resolution mice (#6449) -- thanks @samuelpatro!
Forward right/middle mouse drags to the terminal so tmux menus work (#7319); honor OSC 22 mouse-cursor-shape requests (#7318)
Fix light-theme white-on-white terminal text (#6896)
Fix malformed LC_ALL collapsing the spawned-shell locale to C (#7183) -- thanks @artisticmedic for the report!
Fix zsh shell integration printing file exists under noclobber (#6815) -- thanks @boolafish for the report!
Emit a fish-safe resume cwd-guard (#6328); pin BSD nc for shell-integration socket sends (#7789)
Allow Cmd-Space IME switching in the workspace description editor (#6956)
Rescue split/new-tab cwd inheritance while a resumed agent holds the pane (#7165)
Prevent hibernation from reaping live agent processes (#6576)
Fix agent hooks misrouting notifications to the focused tab (#7228) -- thanks @wowpotato!
Keep Claude hooks authorized after socket rebinds (#7953) -- thanks @belliedmonkey for the report!
Claude hook acks are silent JSON instead of a visible OK block in Claude Code (#7963) -- thanks @cameronsjo!
Resolve agent notification targets from live identity at delivery time (#7946)
Fix the Claude shim mutual exec loop (#7010); fix oh-my-zsh agent auto-resume (#7089)
Fix garbled Claude Code TUI in cmux ssh remote workspaces (#6831)
Persist Claude transcript lookups across agent-index reloads (#7350); keep forkable sessions with stale pids (#6803)
Fix SSH workspaces not reattaching after the Mac sleeps (#7987) -- thanks @petrcernansky for the report!
Preserve one-shot SSH output after disconnect (#7914)
Fix cmux ssh against hosts configured with RemoteCommand/RequestTTY (#7359)
Fix SSH PTY input loss and reordering at reconnect seams (#7717); stop the reattach loop aborting after one retry (#7711); fix a cleanup reconnect storm (#7741)
Fix the stale "Connected" badge on dead remote SSH workspaces (#7828); fix remote SSH workspace cwd tracking (#6747)
Remote tmux: open the shared ControlMaster before the attach burst so all sessions mirror (#6839)
Fix macOS 27 launch crashes from SF Symbol rasterization (#6890, #6728) -- thanks @azooz2003-bit, and @vk1356 for the report!
Fix blank app icon rendering on macOS 15 (#7729); restore titlebar icon sizing (#8039)
Fix native fullscreen being unreachable on multi-monitor setups (#6830) -- thanks @xoxouser00 for the report!
Fix notification-list layout thrash on launch (#6886) -- thanks @sedghi for the report!
Guard the workspace sidebar against layout re-livelock (#6870) -- thanks @angelobruv for the report!
Never park the main thread waiting on a socket callback (#6860)
Bound app termination with a force-exit watchdog (#6837) -- thanks @spaceshipmike for the report!
Fix a tab bar relayout feedback loop (#7997) -- thanks @nkbai for the report!
Fix workspace switch latency from hibernation portal reconcile (#7236, #7231)
Fix the minimal mode toggle relayout hang (#7076)
Fix sidebar hangs from sustained process-title churn and hover lifecycle reentry (#7754, #8007)
Fix the sidebar scroll render storm and decouple scrolling from full-window relayout (#7117, #6801)
Preserve sidebar scroll when closing workspaces (#7594) -- thanks @azooz2003-bit!
Fix notification scroll restoration (#7901)
Fix tab icon shift during pane resize (#7637); fix stale terminal agent tab icons (#7740); restore terminal-only tab icons (#7824)
Fix workspace color picker hue drift (#6762); fix diff viewer transparency (#6671)
Fix Cmd+I breaking italics in browser text editors (#6862); fix Canvas keyboard shortcut routing (#6704) -- thanks @azooz2003-bit!
Fix workspace number shortcut rebinding (#5616)
Make pane-divider resize cursors easier to hit and stop cursor bleed-through from occluded windows (#7816)
Fit main windows after display topology changes (#7308)
Reassert Ghostty focus before physical input (#7278)
Fix workspace group drag-drop intent (#6724)
Run file explorer git status without optional locks (#7173); cache git dirty snapshots between watcher events (#6795); cut steady-state sysctl burn from process snapshots (#7349)
Stabilize sidebar ports across transient scan misses (#7952)
Route browser-pane file drops by intent so they never silently become previews (#7634)
Fix browser downloads from subframes (#6756); fix mTLS client certificate challenges (#7040)
Wire PDF preview download and print toolbar actions (#4266)
Fix omnibar suggestion clicks falling through to the page (#7468); don't let an unfocused omnibar submit on physical Enter (#6818) -- thanks @LanceOlsen for the report!
Fix browser panes stuck black after a failed discard-restore (#7533)
Keep loopback bypass for *.localhost under "Exclude simple hostnames" (#6827)
Fix Traditional Chinese (zh-Hant) showing as Simplified (#7698)
iOS (beta): view artifacts referenced in agent sessions (#7674) -- thanks @azooz2003-bit!
iOS (beta): GitHub sign-in (#7493); account deletion and legal links (#7645) -- thanks @azooz2003-bit!
iOS (beta): arbitrary terminal themes (#6664)
iOS (beta): native drag & drop in the workspace list and create-workspace-in-group (#7384) -- thanks @azooz2003-bit!
iOS (beta): show which features a Mac update unlocks when the connected Mac is older (#7960) -- thanks @azooz2003-bit!
iOS (beta): full-height terminal output and render/viewport fixes (#7071, #7150, #7172, #7175) -- thanks @azooz2003-bit!
iOS (beta): optimistically scroll to bottom when typing while scrolled up (#7196)
iOS (beta): cmux mobile set-font live-resizes the mirrored terminal (#6674)

Thanks to 29 contributors!

[0.64.17] - 2026-06-23

Added

Remote tmux mirroring over SSH using -CC control mode, in beta (#5553) -- thanks @robertnisipeanu!
Global font magnification to scale the whole interface (#6554)
Right-sidebar custom sidebar tabs (#6430)
Chrome-style audio-playing indicator on browser panes (#6517)
Browser hard-refresh shortcut (#6256)
Clear Screen (Keep Scrollback) command, bound to Cmd+Shift+K (#6139)
Configurable terminal scroll-speed multiplier via terminal.scrollSpeed (#5671) -- thanks @RubiconPerform!
Open the selected file from the keyboard in the file explorer (#6001)
One-step grouped workspace creation (#6657)
Searchable, uncapped diff viewer branch-base picker with smart defaults (#6484) -- thanks @azooz2003-bit!
Mark workspaces read/unread and clear notifications from the workspace group menu (#6535) -- thanks @azooz2003-bit!
Profiling capture action with a live progress window (#6433, #6440)
cmux remotes CLI to manage device-registry routes (#6096)
Flag "Needs input" for blocked AskUserQuestion and ExitPlanMode prompts under --dangerously-skip-permissions (#6608)
iOS (beta): on-device voice dictation in the composer (#6197)
iOS (beta): image attachments in the composer (#6102)
iOS (beta): Return key on the terminal accessory bar (#6101)
iOS (beta): mark workspaces read/unread from the terminal menu, with an unread-count badge on the back button (#6362, #6350)

Changed

Terminal and browser surface tabs hug their content instead of stretching to a fixed width (#6653)
Prioritize full command-palette title matches over partial ones (#6498)
Reduce UI lag from Settings, sidebar, git, and browser churn (#6260) -- thanks @azooz2003-bit!
Evict hidden browser WebViews under memory pressure and defer restored WebViews until visible (#6585, #6508)
Gate idle pollers to the active workspace (#6583)
Diff viewer toolbar stays responsive and never overlaps at small widths (#6550) -- thanks @azooz2003-bit!
Allow .m4r files as notification sounds (#6635)
iOS (beta): collapse workspace folders per device (#6666)

Fixed

Fix a sidebar lag regression from v0.64.16 by cutting per-row font-modifier and pin-state work (#6613)
Fix the Codex sidebar status lifecycle and stale Claude notification sidebar status (#6609, #6473)
Fix sidebar tab selection highlight timing (#6627)
Fix Cmd+T opening in home after an agent-resume session restore (#6621)
Fix explicit surface routing for read-screen and send (#6605)
Fix stale surface-to-panel rebinding and stale agent-resume executable paths (#6581, #6582)
Fix terminal input after a window key restore (#6518)
Fix the Cmd+grave show/hide global hotkey (#6477)
Fix vim copy-mode cursor, V/Y selection, and pasteboard (#6221)
Fix copy-on-select parity with Ghostty (#6200)
Fix the crash-diagnostic window restore (#6596)
Fix a tab-switch crash in the vertical sidebar (#6340)
Fix a ~100% CPU re-render loop when selecting a bundled extension sidebar (#6341)
Fix blank SF Symbol controls on macOS 27 (#6396)
Fix the audio indicator audibility signal (#6566)
Fix browser download trigger parity (#6258)
Recover Settings opened from offscreen frames, and stop a closed Settings window from reappearing (#5806, #6193)
Fix title-churn beachball in transcript adoption and sidebar rows (#6460)
Restore the pane header title after a terminal restart (#6333)
Recover a blank Markdown viewer pane after dragging it to another column (#6331)
Vault sidebar always offers "Show more" so capped folder sections stay reachable (#6327)
Fix the working directory after session-restore resume for Claude and other agents (#6458, #6205)
Fix Claude Code 2.1.183 agent-team teammates opening split panes again (#6499)
Preserve Claude Teams restore flags (#6242)
Fix right-sidebar surface shortcut spam routing (#6472)
Fix Dia browser import profile detection (#6478)
Fix zsh aliases after the agent return shell (#6515)
Fix settings search for auto-naming and broaden fuzzy settings-search matching (#6201, #6196)
Fix terminal focus retry after a tiny responder handoff (#6359)
Avoid DevTools teardown during redock (#6559)
Fix hidden popover relayout and reduce hit-test CPU during SwiftUI updates and pointer movement (#6589, #6592)
Cache the settings search index per runtime (#6591)
Move the open-diff baseline lookup off the main thread (#6497)
Fix the macOS notification fallback identity (#6000)
Fix a remote PTY restore probe reply leak (#6070)
Fix OpenCode bunfs worker autoresume and OpenCode resume after a TUI-settings capture (#6680, #6397)
Fix notification jump-focus for nested tabs (#6416)
Remove a sidebar rows measurement that re-livelocked layout at scale (#6188)
Prevent quit hangs from analytics flushing (#6232, #6417) -- thanks @azooz2003-bit!
Reduce Sentry CLI broken-pipe crashes and hangs (#6254) -- thanks @azooz2003-bit!
Release closed macOS helper windows (#6368) -- thanks @azooz2003-bit!
Fix canvas tab hover hit-testing, focus canvas panes from terminal body clicks, and fix canvas zoom-animation snap at low zoom (#6555, #6456, #6538) -- thanks @azooz2003-bit!
Avoid nested quit-confirmation modal loops (#6461) -- thanks @azooz2003-bit!
Reduce redundant panel title update work (#6552) -- thanks @Eridanus117!
Fix a QuickLook preview crash on a deactivated QLPreviewView (#6402) -- thanks @thiveeiyan!
Fix terminal content duplication on window resize (#6386) -- thanks @mvanhorn!
Stop the main window drifting down on sleep/wake (#6305) -- thanks @sergej-koscejev!
Fix stale cmux ssh pane resize by reconciling remote PTY size after arming SIGWINCH, and fix resize with SSH ControlMaster (#5989, #6432) -- thanks @kylejcaron!
Sync remote tmux session renames to the mirror workspace title, and fix session discovery under a non-UTF-8 remote locale (#6602, #6568) -- thanks @mxschmitt!
Fix the cmux ssh-tmux socket path being too long for AF_UNIX (#6465) -- thanks @mxschmitt!
Fix remote-tmux mirror buffer truncation on a cross-DPI display move, and restore the bonsplit pointer so ssh-tmux tab reorders sync to tmux (#6393, #6438) -- thanks @robertnisipeanu!
Merge user --settings into injected hook settings in the claude wrapper (#5388) -- thanks @choi88andys!
Bound iOS pairing attempts and fix the Pair iPhone window (Cmd+W, sizing, layout, QR padding, failure copy) (#6495, #6038)
iOS (beta): fix native pairing sign-in failures (#6457) -- thanks @azooz2003-bit!
iOS (beta): fix the unread count badge contrast, stop pausing background music on text submit, and sustain hold-to-repeat Backspace (#6524, #6290, #6299)
Fix the changelog title clipping (#6425)

Removed

Remove the high-memory pane warning UI (the triangle indicator and popover); the underlying guardrail engine stays (#6619)

Thanks to 12 contributors!

[0.64.16] - 2026-06-15

Added

Opt-in AI auto-naming of workspaces and tabs from your agent conversations (#5547) -- thanks @mvanhorn!
Per-workspace environment variables inherited by every shell in the workspace (#6116)
Configurable file explorer double-click action: preview, default editor, or preferred editor (#5827)
Setting to hide modifier shortcut hints (#6071)
Configurable Dock max width (#4385) -- thanks @sort2f for the report!
Customizable stable window title templates (#6059) -- thanks @digijoebz for the report!
Diff language highlighting aliases (#6076)
Expose each workspace's custom title to the control socket for scripting (#6013)
iOS (beta): workspace list with groups, unread dots, last-activity previews, and a shared Unread filter (#5726)
iOS (beta): workspace row actions (#6022) -- thanks @azooz2003-bit!
iOS (beta): Shift key on the terminal keyboard toolbar (#6104)
Experimental freeform 2D canvas layout for workspace panes, still in progress (#5987) -- thanks @azooz2003-bit!

Changed

macos-option-as-alt now honors left and right Option independently, sending sided modifier bits to the terminal (#6007) -- thanks @1nto5, @ucan-lab, @MrSpock, @Sancerro, @dreasan, @alceal, @lejahmie, and @tofunori for the reports!
Gate remote SSH port scanning on the sidebar ports setting (#6136) -- thanks @Fail-Safe for the report!
Polish the experimental canvas minimap navigation (#6105) -- thanks @azooz2003-bit!
Make Codex agent hooks fire-and-forget so they never block the session (#6110)
Detect live claude/codex processes so hook-less agent sessions stay fork-able (#6133)
Stagger restored terminal surface spawns to smooth session restore (#6149)
Reclaim offscreen terminal renderer GPU memory (IOSurface) non-destructively (#5857)
iOS (beta): smoother terminal scrolling with local scrollback prefetch and faster scroll rendering (#6067, #6035) -- thanks @azooz2003-bit!
iOS (beta): cross-device notification dismiss-sync and an authoritative unread badge (#5916)
iOS (beta): local-first, offline-safe sign-out (#5776)
iOS (beta): require a matching email for pairing (#6028)

Fixed

Fix terminal top-row mouse event routing, including minimal-UI hit testing (#4391, #6073) -- thanks @colangelo and @edouardp for the reports!
Restore OSC 11 pane-local backgrounds (#5997) -- thanks @fkchang for the report!
Fix the macOS 27 SF Symbol rasterization crash (#5999) -- thanks @matheustimbo and @joseluislucio for the reports!
Fix a stale Metal drawable after terminal layer realization (#6057) -- thanks @robertnisipeanu for the report!
Fix terminal arrow key routing for TUI model selection (#6002) -- thanks @wo4wangle for the report!
Fix the Cmd+T working directory after session restore (#6055) -- thanks @WangRouna for the report!
Preserve Pi sessions across workspace restore (#5607) -- thanks @bjesuiter for the report!
Fix top-right titlebar drag chrome (#6003) -- thanks @dbachelder for the report!
Fix the OpenWrt BusyBox remote platform probe (#6056) -- thanks @Fail-Safe for the report!
Fix stale remote connected state after a proxy disconnect (#4513)
Surface a browser fallback when Safari sign-in hangs (#6113)
Fix the browser omnibar Return submitting stale text during fast typing (#5923)
Avoid mirroring web proxies as CONNECT (#5959)
Fall back to SSH when the Cloud VM attach endpoint is unavailable (#6079)
Fix sidebar row-height layout feedback (#6111)
Kill a sidebar LazyVStack layout livelock (#6033) -- thanks @azooz2003-bit!
Fix unexpected menu-bar-only activation policy (#6068)
Fix Mermaid diagrams scaling in the markdown viewer zoom (#6072)
Honor Focus / Do Not Disturb for the fallback notification sound (#5651) -- thanks @Reebz!
iOS (beta): fix compact workspace row navigation by removing redundant tap gestures (#6124) -- thanks @azooz2003-bit!
iOS (beta): reduce workspace row swipe contention (#6064) -- thanks @azooz2003-bit!
iOS (beta): fix a workspace swipe-delete confirmation crash (#6051) -- thanks @azooz2003-bit!
iOS (beta): preserve the email code sign-in nonce (#6097)
iOS (beta): fix TestFlight push notifications by exporting the production APNs entitlement (#6131)

Thanks to 26 contributors!

[0.64.15] - 2026-06-12

Added

Review comments in the diff viewer: comment on changed lines, persisted per repo, and attach the comment set to a terminal TextBox to hand to an agent (#5768)
when context clauses for keyboard shortcuts with VS Code-style context keys and operators, and the Select Workspace/Surface 1…9 shortcuts (⌘1–9) are now rebindable (#5196)
New Browser Workspace command (Option+Cmd+N) (#5926)
Browser view actions in the CLI (react-grab, devtools, console, focus-mode, zoom, history) with a more reliable automation lane (#5766, #5778)
cmux window display to place a window on a named display (#5804) -- thanks @azooz2003-bit!
Workspace group commands in the cloud CLI relay (#5856) -- thanks @azooz2003-bit!
Fish shell integration (#5678)
React and Solid agent session panels (#4429)
iOS (beta): iMessage-style terminal composer with inline send and per-terminal drafts, plus a View as Text sheet for copying terminal output (#5876, #5875)
iOS (beta): customizable terminal toolbar with custom actions and reorderable built-ins, on a redesigned default layout (#5510, #5579, #5532)
iOS (beta): multi-Mac host switcher with a hierarchical device tree, workspaces from all Mac windows, and rename/pin from the phone (#5513, #5648, #5565, #5512)
iOS (beta): paste images from the phone clipboard into the terminal (#5546)
iOS (beta): first-run onboarding, Tailscale-off detection, actionable pairing failures, cancellable sign-in, and pull-to-refresh on the workspace list (#5655, #5714, #5722, #5713, #5728, #5654)
iOS (beta): early browser panes (WKWebView) and a Send Feedback flow (#5652, #5653)

Changed

Custom sidebars render in-process by default, get a dedicated Settings section, remount instantly on toggle, and repaint live during resize, with new example sidebars to start from (#5867, #5864, #5895) -- thanks @azooz2003-bit!
Terminal notifications forward to the iPhone only while you're away from the Mac (#5912)
Slimmer pairing QR codes that scan faster, with Copy IP/Port and no expiry (#5727, #5872)
The Mac pairing window shows a connected state when the iPhone attaches (#5542, #5795)
Crash reports scrub file paths, PII, and secrets before sending (#5598)
Webview assets are split per surface so panes load less JavaScript (#5613)

Fixed

Fix the app hanging at 100% CPU on launch on macOS 26 from a FileExplorer SwiftUI update loop (#5786, #4937) -- thanks @kevinsslin, and @haoranaaa for the report!
Fix a launch crash on the macOS 27 beta and unblock Xcode 27 builds (#5670) -- thanks @matheustimbo!
Fix SSH typing lag with async PTY writes (#5594) -- thanks @lleewwiiss!
Fix light themes rendering white-on-white terminals (#5826) -- thanks @abdullahnauman2 for the report!
Hide the sidebar scrollbar when content fits and fade the overlay knob when idle (#4767, #5846, #5955) -- thanks @yigitkonur for the report!
Fix recurring main-thread livelocks with many workspaces and agent sessions, and a UI freeze when closing tabs (#5708, #5859, #5673, #5669)
Cmd-click links inside fullscreen TUIs (Claude, Codex) now open in cmux's browser instead of the system default (#5406) -- thanks @denysshnurenko for the report!
Fix OSC 8 Cmd-click hyperlinks in terminal panes (#3580)
Surface needs-input attention (sidebar status, bell, tab elevation) for blocking PermissionRequest hook decisions (#5313) -- thanks @Dukeman330 for the report!
Fix resumed Claude sessions dropping cmux hooks when claude doesn't resolve to the wrapper (#5721) -- thanks @Lipdog for the report!
Preserve user Claude settings on resume (#5661)
Fix forked Claude sessions restoring the parent session after a cmux restart, and restore missing Fork Conversation entries (#5910, #5937)
Recover session restore from a corrupt snapshot via the rolling backup (#5914)
Keep Codex permission hooks non-blocking (#5507)
Browser: fix the context menu opening the wrong link, wrong image download filenames, and loopback URLs hitting the system proxy on local workspaces (#5780, #5938, #5915)
Fix a browser keyDown stack-overflow crash (#5899) -- thanks @azooz2003-bit!
Fix crashes from key-routing replay loops in the find overlay and browser (#5755, #5891)
Fix the Find pane for same-directory workspaces (#5956)
Stop SSH auto-reconnect when the host is unreachable and add a manual Reconnect control (#5767)
Keep remote shell startup responsive (#5695)
Stop titlebar elements shifting when toggling the sidebar (#5707) -- thanks @azooz2003-bit!
Localize package display strings missing from the app catalogs (#5829) -- thanks @azooz2003-bit!
Clearer updater errors when the launchd agent install fails, with a manual-download fallback (#5760) -- thanks @azooz2003-bit!
Retain the Settings window so it reliably reopens (#5801) -- thanks @azooz2003-bit!
Fix the diff viewer loading state showing gray instead of the terminal theme (#5631)
Fix the inline VS Code command palette and WebSocket startup (#5595)
Fix sidebar Shift-click range selection after a no-op drag (#5601)
Keep pinned workspaces inside their group, and fix dragging grouped workspaces above their group (#5541, #5612)
Fix sidebar status pills for newly created workspaces (#5662)
Don't hijack ZDOTDIR when the bundled shell-integration bootstrap is missing (#5773)
Fix memory growth from retained publish responses and event-stream allocations (#5664)
Reduce background CPU from process polling and browser-availability checks (#5759, #5744)
iOS (beta): park notification-tap deep links until the workspace can be opened, fix a false-fire render watchdog replay loop, cap the restoring-session wait for stale Macs, and localize push notification strings (#5927, #5869, #5564, #5519)

Thanks to 12 contributors!

[0.64.14] - 2026-06-06

Added

iPhone companion app (beta): pair an iPhone from the new Mobile Connect window (also in the command palette) and attach to your Mac's terminals from your phone, with a configurable pairing port and opt-in forwarding of terminal notifications; the iOS beta ships on TestFlight as cmux BETA (#5079, #5493, #5489, #5518)
Drag a workspace into another window's sidebar to move it between windows, including grouped workspaces (#5399)
Sign In and Sign Out commands in the command palette (#5529)
OMP agent hook integration with notifications and session restore via cmux hooks omp (#5413) -- thanks @joshrzemien!

Changed

Custom sidebar extensions now run out-of-process with an isolated interpreter, so a broken sidebar can't hang or crash the app (#5294, #5382) -- thanks @azooz2003-bit!
Broader SwiftUI primitive coverage in the custom sidebar interpreter (#5275) -- thanks @azooz2003-bit!
Browser omnibar: the first click that focuses the address bar selects the whole URL, later clicks place the caret (Chrome parity) (#5462, #5352)
Browser chrome (omnibar font and toolbar icons) scales with the tab bar font size (#5464)
Sidebar workspace group headers scale with the sidebar font size (#5401)
Agent Hibernation defaults to a 5-second idle window when enabled (#5449)
Tighter fuzzy filtering for skill suggestions in the terminal textbox (#5348)

Fixed

Keep actively-playing audio and video in browser panes alive when the pane is hidden (#5412, #5441)
Fix a typing beachball in the browser omnibar with large browsing histories (#5397)
Fix the main window refusing to resize narrower than its current width (#5474)
Fix the sidebar close button hidden under wrapped workspace titles (#5488)
Fix notification sound selection so the picker previews the selected sound and notifications play it (#5480)
Restore the menu bar icon dropdown menu on click (#5451)
Fix OSC control sequences (e.g. terminal background color) printed as literal text when sent via cmux send (#5509)
Fix native Claude resume dropping cmux hooks, so notifications and status tracking keep working on resumed sessions (#5430)
Fix Agent Hibernation for node-backed Claude sessions (#5433)
Codex resume hardening: keep restored surfaces from jumbling and preserve CODEX_HOME so non-default Codex homes resume correctly (#5351)
Fix Cmd +/- zoom in the browser and Markdown viewer on non-US keyboard layouts (#5394)
Preserve syntax highlighting on changed lines in the diff viewer (#5415)
Fix a stale group name in the window title bar after renaming a workspace group (#5408)
Fix the Dock sidebar not rendering after closing and reopening it (#5437)
Fix OMO subagent pane respawn through the tmux compatibility shim (#5465) -- thanks @leodiegoo for the report!
Reduce sidebar git activity by coalescing repeated metadata probes (#5402)

Thanks to 5 contributors!

[0.64.13] - 2026-06-04

Added

Browser focus mode (#4573)
SSH agent forwarding for cmux ssh, so remote sessions can use your local SSH keys (#5301)
Vibe-codable custom sidebars: a runtime Swift interpreter for building your own sidebar, behind a Beta Features flag, with CLI validation and live reload (#5254, #5327) -- thanks @azooz2003-bit!
Browser mouse back and forward button support (#5197)
Persisted word-wrap setting for the file editor (#5247)
"Open Current Directory in Devin" command (#5288) -- thanks @MaxiAschenbrenner!
Live status reporting in the Amp Neo session plugin, driving the cmux tab status bar (#5235) -- thanks @HamptonMakes!

Changed

Anchor the textbox autocomplete to the cursor (#5021)
Add a font-size popover to the Markdown viewer controls (#5168)
Open group config files in your configured editor (#5250)
Isolate browser WebKit process pools so one browser pane crashing no longer takes down the others (#4987)
Move large scrollback read-text work off the main actor to reduce UI hangs (#5243) -- thanks @azooz2003-bit!

Fixed

Fix a settings-observation task leak that grew the app process to 4.4 GB over ~23h (#5310)
Fix a browser pane render loop that re-navigated the WebView on every CoreAnimation commit (~39% main-thread CPU) (#5311)
Fix a WebKit post-wake crash with sleep/wake-aware hidden-webview discard scheduling (#5315) -- thanks @azooz2003-bit!
Fix the Markdown and file-preview text editor hanging at 100% CPU on click or drag-select by forcing a TextKit 1 stack (#5257)
Stop cmux from launching child processes under Rosetta on Apple Silicon (#5306) -- thanks @CharlesWiltgen for the report!
Recover terminal focus when the first responder is stranded in another window (#5296)
Fix the browser address bar so a single click places a caret instead of selecting the whole URL (#5270)
Fix copy-mode vim keys (j/k/h/l) swallowed under non-ASCII input sources (Korean, Japanese Kana, Zhuyin) (#5292) -- thanks @pstanton237!
Fix terminal copy-mode cursor navigation (#5328)
Fix terminal selection on mouse-up while the find overlay is open (#5335)
Fix TextBox IME and input-source handling (#5340)
Fix the macOS "wants to access data from other apps" prompt on agent session start and quit by moving the control socket out of Application Support (#5176)
Fix Codex auto-resume emitting an invalid -s disabled sandbox flag (#5276) -- thanks @taonetm7 for the report!
Fix agent session resume cd-ing into the wrong directory after a cwd drift, plus post-kill cwd handling (#5300, #5312)
Fix restored cwd bindings after a reboot (#5307)
Fix a stale sidebar git branch after cd-ing out of a repo into a non-git directory (#5279)
Fix a TextBox teardown crash when toggling the sidebar background (#5317)
Fix a workspace-close teardown hang (#5316) -- thanks @azooz2003-bit!
Fix the workspace-group "Delete Group" context-menu action being a no-op (#5253)
Fix the diff viewer showing a raw CLI error and beeping when there is no diff (#5252)
Fix sidebar drag-and-drop frame collection with the lazy (virtualized) sidebar (#5325)
Lazy-load file explorer roots to speed up opening the file tree (#5342)
Fix Claude workflow resume transcript resolution (#5242) -- thanks @azooz2003-bit!
Fix opening the remote SSH file browser (#5241) -- thanks @azooz2003-bit!
Fix custom-sidebar extension discovery for tagged builds (#5267) -- thanks @azooz2003-bit!
Fix Sparkle update packaging and Claude hook transcript scaling (#5202)

Thanks to 8 contributors!

[0.64.12] - 2026-06-02

Added

Configurable keyboard shortcut to open the diff viewer, editable in Settings (#5178)
Font size and zoom controls in the Markdown viewer (#5163)

Changed

Gate the Feed behind Beta Features (mirroring Dock), off by default (#5174)
Improve the terminal text context menu (#5135) -- thanks @azooz2003-bit!
Rank visible title matches above hidden metadata in the workspace switcher (#5148)
Build the release app with the macOS 26 SDK (#5042)

Fixed

Fix Starship and other custom prompts going static in bash by composing the prompt bootstrap with the user's existing PROMPT_COMMAND (#5187) -- thanks @xzjncu for the report!
Report remote PTY allocation failures loudly so cmux ssh no longer fails silently when remote PTY attach fails (#5186) -- thanks @windyslow for the report!
Fix a main-thread hang from focus-surface broadcast re-entrancy triggered by custom shortcuts (#5108) -- thanks @wzh4464 for the report!
Restore the right-click sidebar view switcher and built-in views (Default Workspaces, Project Worktrees, and others) (#5182)
Strip terminal-color OSC sequences from restored scrollback so old sessions no longer keep a previous theme's colors (white-on-white after a theme change) (#5175)
Fix the browser Web Inspector reopening by itself after manual close and navigation (#5180)
Honor the Settings rebinding of Global Search by parsing package object-form cmux.json shortcut bindings (#5143)
Fix Claude fork and resume failing when the session had changed directories (#5154)
Fix titlebar shortcut-hint pills clipped at the bottom on macOS 26.5 (#5145)
Fall back to the default sidebar when extensions are disabled (#5127) -- thanks @azooz2003-bit!
Stabilize the git metadata FSEvents watcher to stop an event storm (#5131) -- thanks @azooz2003-bit! and @randybias for the report!
Avoid E2BIG when the SSH startup script exceeds MAX_ARG_STRLEN (#5133) -- thanks @lauzierj!

Thanks to 8 contributors!

[0.64.11] - 2026-06-01

Added

Workspace groups: select sidebar workspaces and press ⌘⇧G to group them under a collapsible header, with an anchor workspace, drag-to-group, in-group reorder, per-group color and icon, unread badges on the header, and a Delete Group action that closes all members (#4815)
cmux workspace-group CLI namespace to create, remove, set-color, set-icon, move, and focus groups, with new-workspace placement configurable per group and via cmux.json (#5018)
Focus history and Recently Closed history: navigate back and forward through recently focused workspaces and windows from the titlebar, and reopen recently closed surfaces from a searchable history pane (#4160)
Agent Hibernation pauses idle agent sessions and restores them on demand to cut background resource use (#4165)
Detachable SSH PTY daemon keeps remote sessions alive across reconnects so SSH workspaces survive a dropped connection (#4807)
Configurable sidebar workspace font size, plus a workspace tab bar font size control capped at 14pt (#4798)
Browser tab audio mute toggle in the tab right-click menu, kept in sync with WebKit playback state (#4911)
Fork Conversation action in the tab right-click menu, with configurable fork destinations (#4888, #4986 -- thanks @lawrence703!)
Xcode-style project visualizer pane (#4996)
cmux diff command opens a CodeView diff viewer, with large git diffs streamed into the viewer before full render (#4451, #5016)
Send Ctrl-F to Terminal passthrough action to force-stop Claude Code agents (#5011)
Native Kiro CLI hook integration with notifications, task manager attribution, and session restore (#4831)
Default terminal registration so the system terminal preference resolves to cmux (#4935)
Configurable browser search providers (#4849)
Terminal textbox input with beta TextBox defaults settings (#4333, #4773)
Viewport-aware workspace path display truncates sidebar paths to fit the available width (#3730) -- thanks @gonzaloserrano!
Wrap long workspace titles in the sidebar instead of truncating (#4848)
Open cmd-clicked Markdown paths in the Markdown viewer (#4864)
Beta Features toggle gates the in-progress extension sidebar UI (#5092)

Changed

Notifications popover redesigned: bigger, minimal layout with swipe-to-dismiss (#4778)
Use Hermes hook payloads for richer agent notifications (#4851)
Settings is now a top-level peer window instead of a floating child window (#5081)
Launch restored agent sessions through their saved startup commands (#4777)
Reduce browser WebView input latency (#4863)
Make the workspace sidebar lazy with @Observable drag state and batch sidebar actions for faster reorders on large sidebars (#4736, #4865)
Make session index backfill linear so large session histories load faster (#4868)
Resolve TypeScript .ts files as text previews instead of routing them through QuickLook media (#4924)
Forward CLI subcommands from the GUI binary to the bundled CLI (#4679) -- thanks @tiffanysun1!

Fixed

Fix File Preview hang when drag-selecting large files (#4962)
Fix the File Preview Open With menu (#4932)
Stop stale closed-browser snapshots from reappearing in unrelated workspaces (#4961)
Fix zsh hook errors when the job table is saturated (#4959)
Fix bash job notification spam (#4934)
Fix Claude hooks-disabled environment passthrough (#4418)
Fix NSFileHandle process pipe read crashes (#4800)
Fix cmux terminal environment injection (#4728)
Recognize Eternal Terminal for remote file drops (#4712)
Fix Vault resume for non-ASCII paths (#4683)
Fix Markdown files with trailing punctuation being detected as URLs (#4594) -- thanks @jasonko!
Fix the Reload Configuration menu action (#4534)
Fix OMO tmux compatibility session ids (#4468)
Fix equalize split span weighting so 3+ pane rows distribute evenly (#4787)
Fix matched sidebar terminal background (#4780)
Fix restore-previous-launch crash and preserve current work on restore (#4982)
Fix agent resume when the saved cwd was deleted (#4859)
Fix hidden Settings window burning CPU during Codex output (#4661)
Fix embedded Ghostty split theme resolution so split panes inherit the active theme (#4795)
Fix titlebar controls intercepting window drags and right-sidebar button clicks (#5005, #5102)
Fix split zoom not clearing when the maximized tab is closed (#5076)
Fix spurious "Terminal needs approval" prompts from the Hermes pre-tool-call hook (#5010)
Fix Hermes session restore so a per-turn session-end is treated as a turn boundary, not a teardown (#5009)
Fix the JSONC comment skipper for CRLF line endings (#4869)
Fix Bonsplit tab indicator drift (#4873)
Open bare relative path arguments externally without requiring socket access (#4812)
Keep Cmd-Tab app switching off the session snapshot path (#4613)
Restore the sidebar minimum width and keep the titlebar stable at minimum width (#5062, #5089)

Removed

Remove History from the right sidebar (#4785)
Remove the terminal scrollbar workspace menu (#5072)
Stop bundling example sidebars in the app (#4662)

Thanks to 7 contributors!

[0.64.10] - 2026-05-23

Added

Copy on Select setting copies the active terminal selection to the clipboard as soon as the mouse is released (#4011) -- thanks @kallioaleksi for the report!
CmuxExtensionKit sidebar prototypes showcase the upcoming extension API for custom workspace sidebars (#4309)
Ghostty Settings command palette action opens the embedded Ghostty configuration directly (#4654)
Warn before, or hide, the tab close button to prevent stray accidental closes (#4632)
Skip the quit-confirm dialog on DEV builds and honor app.confirmQuit on stable/nightly (db267718)
Keep Codex notifications after interrupted turns so the badge survives a ctrl-c mid-stream (#4583)
Move resume command approvals into cmux.json so per-repo configuration can preapprove agent resume invocations (#4538)
cmux reorder-workspaces accepts batch input, supports --dry-run, and emits reorder events (#4507)

Changed

Move the browser loading spinner onto Core Animation so it stays smooth during heavy rendering (#4600)
Harden remote websocket PTY sessions against connection churn (#4323)

Fixed

Fix the TaskManager snapshot-boundary violation that caused the 0.64.8 memory leak by keeping pane store references out of the lazy list subtree (#4555)
Fix the runProcess pipe teardown crash hit when a process exits during stdout drain (#4568)
Fix key repeat rendering lag in the terminal under sustained input (#3986)
Fix asymmetric equalize splits so a 3+ pane row distributes evenly even when one pane started larger (#4381)
Fix cmux.json split ratios so persisted ratios apply to restored splits (#3980)
Fix browser URL bar stealing focus on tab switch (#4623)
Forward Cmd+Up / Cmd+Down to the browser pane so Google Docs and other web apps can jump to top/bottom (#4637)
Fix close shortcuts targeting the original window when the user has moved focus to a different one (#4615)
Fix Ghostty split theme appearance resolution so a freshly split pane inherits the active theme (#4567)
Fix theme picker chrome preview sync so the swatch matches the applied chrome (#4652)
Fix sidebar edge fade background so the gradient blends with the active surface (#4610)
Fix markdown remote SVG image loading inside the markdown viewer (#4533)
Fix restored panel unread sidebar badges so badge state survives session restore (6f1ecc9f)
Prevent DEV builds from stealing the stable CLI socket when both run side-by-side (5ab642a3)

Thanks to 3 contributors!

[0.64.9] - 2026-05-21

Fixed

Stop unbounded Git repository search past filesystem root so non-Git workspaces no longer grow RSS from ~450MB to 8GB and trigger the OOM killer (#4557) -- thanks @Luciferxie for the report!
Restore the Browser Memory Saver default to on (discards hidden browser webview renderers after the discard delay) to mitigate the 0.64.8 memory regression (#4545) -- thanks @Luciferxie for the report!

Thanks to 3 contributors!

[0.64.8] - 2026-05-21

Added

Antigravity CLI integration with hook notifications, task manager attribution, and session restore (bd4a31c0)
Native Grok Vault resume support (5708d67b)
--window routing for window-scoped CLI commands (workspace, pane, surface, SSH, VM, notifications, tree, top) (#4211)
Browser screenshot clipboard actions (#4479)
Attribute notifications to their source panel (20691adb)

Changed

Keep browser webviews alive by default, reverting the 0.64.7 discard-by-default behavior (#4388)
Align titlebar controls with macOS traffic lights (#4471)
Localize Antigravity hook strings and running status (861d43a9, b5a4d6dc)

Fixed

Prevent minimal-mode pane tabs from moving the window when dragged (e7941740)
Fix Option dead-key accent composition so Option+n then a commits "ã" (#4382) -- thanks @moskoweb for the report!
Route keyboard/menu equalize_splits through v2ProportionalEqualize so 3+ panes split evenly (#4400) -- thanks @mvanhorn!
Fix Quick Look preview deactivation crash (#4459)
Fix QuickLook crash after proxy icon split close (#4460)
Fix git index.lock polling in sidebar metadata watcher (#2797)
Fix theme override path for channel builds (Nightly/Staging no longer retheme Release) (#4484)
Fix minimal-mode sidebar titlebar icon alignment (#4481)
Fix notification Settings open path (#4456)
Suppress nested agent hook notifications (#4334)
Fix Antigravity presentation and resume (0f67df81)
Fix Antigravity Vault resume indexing (9fa5d1d8)
Fix Antigravity fallback session build (80fe38d6)
Fix Antigravity conversation sanitizer width (8bd285a9)
Fix Grok agent-scoped Vault filtering (12ae177f)
Fix Grok Vault titles and icon (84373476)
Deduplicate Grok Vault sessions (9f66dffd)
Honor shell Grok homes in Vault, including custom hook state directories (be8c37c4, f95b25b9)
Restore compact pane tab width (f0370709)
Fix session search ripgrep cancellation crash (fa623368)
Preserve right sidebar remembered mode (aac80054)
Persist restored pane notifications and resync restored notification badges (e4856922, 9ffdb45a)
Preserve workspace cwd metadata for registered agents (9b1e186d)
Preserve transparent terminal hosting (1ca56296)
Keep browser URL tied to committed navigation and harden provisional navigation state (40863609, e240c302)
Fix sidebar overlay contrast scheme and keep sidebar chrome readable across themes (452745b6, 4223df74)
Synchronize theme contrast on reload and align terminal scheme with live theme (228f3abd, b6d34706)
Reload themes through the cmux socket so theme changes propagate to running instances (1be9d26c)
Foreground and reload after interactive theme picker (b0f58e47, 8a4e57cf)
Ignore inherited socket context from other cmux bundles (b361e9a2)
Preserve numbered shortcut stale-menu routing and remapped close defaults (d198a962, f2b257fb)
Clear restored unread on workspace resume and defer dismissal to focused panel (b24cf548, f594d5a8)
Update Bonsplit minimal tab drag hit testing and keep titlebar drag handle out of pane tabs (36fc880f, 735dde1d)
Gate process termination until launch succeeds and handle deferred cancellation edge cases (a14ca57c, 227305d5)
Deduplicate shell wrapper installer (a21a21c5)

Thanks to 4 contributors!

[0.64.7] - 2026-05-19

Added

Grok Build CLI integration with notifications, task manager, and session restore (#4225)
Surface resume bindings (#4237)
Allow tab header double-click to zoom panes (#3892) -- thanks @Litee for the report!
Open crash diagnostics from notifications (#4296)
Toggle Unread shortcut (#4231)
Command palette toggle for file opening (#4208)
Agent conversation fork commands (#4198)
Let terminal tabs move into existing workspaces (#3890)
Browser: hidden webview discard settings (#4245) -- thanks @lidge-jun!
Browser: expose webview lifecycle state in top (#4243) -- thanks @lidge-jun!
Show cmux open in CLI help (#4206)

Changed

Preload CLI-created browser panes offscreen so they're ready when the workspace becomes visible (#4345)
Discard hidden browser webviews to reclaim memory (#4244) -- thanks @lidge-jun!
Avoid idle background terminal surface priming (#4184)
Reduce Cloud VM create overhead (#4202)
Optimize command palette search (#4043)
Drop runtime-only flags from agent resume commands (#4196) -- thanks @dangaogit for the report!
Open markdown files through the shared markdown viewer path (#4285)
Mark workspace unread when any tab inside it is marked unread (#4169)
Preserve unread indicators across session restore (#4130)
Reconcile provider-deleted Cloud VMs before applying active VM limits (94c0b709)
Skip the approval prompt for CLI resume commands (1b5bc76b)

Fixed

Fix NIGHTLY update bundle icon metadata (#4353)
Fix ripgrep resolution for Nix installs (#3946) -- thanks @afterthought for the report!
Prevent omo plugin warning infinite loop (#3960) -- thanks @liyue2008 for the report!
Don't auto-resume an agent that already exited before the snapshot (#4269) -- thanks @wowpotato!
Fix markdown viewer image rendering (#4288)
Fix task manager process accounting accuracy (#4132)
Fix browser omnibar IME candidate window for Japanese / Zhuyin (#4268)
Fix Cmd-hover bounds for spaced file paths (#4291)
Fix light theme foreground rendering when using conditional dark:X,light:Y themes (#4278)
Suppress browser editing shortcut replay (#4186)
Discover cmux user themes so the light theme palette applies as expected (#3956) -- thanks @abdullahnauman2 for the report!
Fix Web Inspector blank restore and close crash (#4182)
Fix variant-aware CLI socket fallback (#3543)
Cmd-click reload now duplicates the browser tab (Chrome parity) (#4284)
Fix surface tab bar action button clipping on window resize (#4121) -- thanks @jmoses26 for the report!
Fix Claude sidebar resume so it no longer overrides CLAUDE_CONFIG_DIR and triggers first-run prompts (#4116) -- thanks @hexalellogram for the report!
Keep SSH pane close from killing sibling panes (#3995) -- thanks @kylejcaron for the report!
Fix background workspace PTY startup for socket-created surfaces (#3876) -- thanks @hummer98 for the report!
Preserve Codex plugin config during hook setup (#4270)
Fix browser deep-link popups (slack://, discord://, zoom://, etc.) (#4226)
Fix offscreen terminal helper PTY startup (#4233)
Fix Cmd-N routing from the browser omnibar (#4038)
Fix omnibar arrow key focus races (#4183)
Fix browser window.showOpenFilePicker support (#4122) -- thanks @ZhuYichuan for the report!
Fix task manager attribution for launchd-parented helpers (#4190)
Fix background new-workspace commands (#4137)
Fix Slack composer Cmd+C in browser panes (#4126)
Fix permission notifications after auto-allow (274128ec)
Fix markdown and file preview panel session reuse (838ad59f)
Fix nightly startup crash (76ba2bfd)

Thanks to 14 contributors!

[0.64.6] - 2026-05-14

Added

Command palette toggles for boolean Settings rows, including iMessage Mode (f85cc56a)

Changed

Improve Cloud VM error guidance with sign-in steps, unknown-flag suggestions, and usage examples (#4094)
Use transparent backgrounds for file preview panels so previews follow the active Ghostty theme opacity (#4088)

Fixed

Fix cmux ssh dropping keystrokes after connecting — the backgrounded ssh inside the startup wrapper now inherits the wrapper's stdin so typing reaches the remote shell (#4135) -- thanks @kays0x for the fix, @kenfdev and @liudp1988 for the reports!
Keep the selected workspace visible after sidebar reorders (#4083)
Fix Pi Vault icon and JSONL session titles (#4120)

Thanks to 5 contributors!

[0.64.5] - 2026-05-13

Added

Codex Teams subagent panes that map codex-teams sessions into native cmux panes (#4056)
Task Manager column sorting and Program Totals that aggregate repeated processes by name (#4066)
Amp built-in restore and session plugin with hook installer (be769af3) -- thanks @comp615!
Menubar global search across windows, workspaces, panes, and surfaces (#3908)
Open right sidebar tools as panes (#4065)
Workspace cwd inheritance setting (#3921)
Right-sidebar CLI command parity (#3810)
Bring notification CLI to panel parity with dismiss, mark-read, open, and jump-to-unread (#3811)
Open supported files in cmux on cmd-click (#4041)
Unread defer shortcut (#4086)
Pi agent icon (#4057)
iMessage workspace ordering and live message previews (#4062)

Changed

Enable Feed by default (#3854)
Keep manually marked workspace and tab unread state sticky until you interact with the terminal, so navigation and focus don't clear it (#4104)
Route markdown paths from cmux open and file.open into markdown preview panels instead of generic file preview panels (#4085)
Rewritten Markdown viewer with a webview-based renderer (#3664) -- thanks @tobi!
Auto-preserve Vertex/Bedrock auth env when launching the Claude wrapper inside cmux (#3714) -- thanks @psh4607!
Approve installed Codex hooks during initial setup (#4075)
Hide sidebar descriptions in title-only mode (#4040)
Limit Cloud VMs by active provider state (#4046)
Save crash diagnostics under cmux state (#4077)
Reset Kitty keyboard mode at shell prompt boundaries (#3870)
Narrow IME candidate key suppression (#3867)
Keep Claude running after /clear (#3631)
Clarify in cmux --help that reload-config covers Ghostty config too (#4060)

Fixed

Fix Korean 2-Set IME left/right terminal arrows (#4095)
Fix terminal portal resize lag (#4102)
Fix Settings search synonyms (#4082)
Fix sidebar unread badge after re-marking notifications (#4084)
Close browser panels when pages request window close (#4070)
Fix new-workspace caller window routing (#4042)
Prevent display-link crash from terminal portal layout reentry (#3885)
Fix shared WebView task manager attribution
Fix stale SSH ControlPath cleanup before pane launch (#3894)
Prevent Metal renderer row rebuild crash (#3916)
Fix garbled Chinese paste text (#3929)
Fix cmux frontmost state without keyboard focus (#3907)
Reject unsupported durable Claude cron requests (#3905)
Use absolute remote path for cmuxd-remote scp upload (#3880) -- thanks @bcb225 for the report!
Fix browser Return beep during sign-in (#3843)
Honor focusPaneOnFirstClick for minimal-mode chrome and workspace sidebar (#3881) -- thanks @rursache for the report!
Preserve window position across sleep/wake with multiple monitors (#3882) -- thanks @al3kaz for the report!
Fix terminal TUI background seam (#3903)
Pass Claude subcommands through the cmux wrapper (#3871) -- thanks @abdelibrahim-hh for the report!
Open bare window.open(_blank) without features as a tab instead of a popup (#3245) -- thanks @azu for the report!
Clear sidebar freeze after color/reorder so workspace rows keep updating (#3874) -- thanks @michaellopez for the report!
Keep update pill polling current after the first update (#3833)
Redraw cmux window on focus regain even when the cursor is over the sidebar resize handle (#3879) -- thanks @mikesmitty for the report!
Fix Cloud VM SSH attach and baked tooling (#3786)
Fix multi-image terminal drops (#3769)
Cover right sidebar tool panel in search
Skip unrestorable Claude startup sessions (#4079)
Fix repeated assistant iMessage completions
Sanitize Claude Agent View passthrough env

Thanks to 12 contributors!

[0.64.4] - 2026-05-11

Added

Add warnBeforeClosingTab close-warning toggle to opt back into the close confirmation prompt (#2808) -- thanks @dandaka for the report!
Add cmux browser cookies import CLI for bringing cookies into cmux browser panes (#3770)
Add guarded cmux://ssh deep links that prompt before launching SSH (#3677)
Restore Vault Pi agent sessions across relaunch (#3582, #3636) -- thanks @garizs for the report!
Add Hermes Agent hook support (#3585)
Per-agent toggles for hiding Claude, Codex, OpenCode, Gemini, and Rovo Dev session restore (#3616)
Add Insert Path and Insert Relative Path context menu items in the file explorer (#3620)
Restore SSH workspace descriptors on relaunch (#3576)
Follow SSH workspaces in the Files sidebar so the remote root replaces the local macOS path (#3721) -- thanks @Lots-ninety-nine for the report!
Add Welcome sidebar toggle shortcuts (#3748)

Changed

File drop routing now defaults to text with Shift used as the split override.
Allow HTTP localhost subdomains in browser panes (#3764)
Make browser find shortcuts respect remaps (#3728)
Make Close Tab remaps own browser popup close (#3830)
Alias top-level auth commands so cmux signin and cmux signout work without the auth prefix.

Fixed

Fix stale terminal foreground after theme switch leaving white-on-white text in running sessions (#3852)
Fix managed defaults replay overriding user changes after every cmux.json reload (#3847)
Preserve the Claude wrapper dev channel resume flag (#3752) -- thanks @Clean-Cole!
Fix SSH browser loopback fetches reaching backends on second forwarded ports (#3820)
Fix modified Backspace deleting more than one character when an omnibar inline completion is showing (#3842)
Close Web Inspector before browser host teardown to prevent a UAF crash on pane close (#3835)
Fix Files sidebar find result aggregation (#3818)
Fix Escape dismissing the command palette (#3823)
Resume Claude, Codex, and OpenCode sessions from the session's original cwd.
Fix Close Other Tabs targeting all tabs in the pane right-click menu (#3628) -- thanks @flatsponge for the report!
Clear surface notifications during pane teardown so workspace badges don't stay stuck (#3744)
Fix folder proxy icon drag (#3804) -- thanks @lederniermagicien!
Fix right sidebar shortcut defaults (#3784)
Fix right sidebar titlebar double-click (#3750)
Fix right sidebar Find typing lag (#3739)
Route SSH image drops through the terminal text path.
Fix terminal top-row click routing (#3720)
Fix Mark Workspace as Unread enablement (#3727) -- thanks @mfn for the report!
Fix Cmd-W to close Task Manager and auxiliary windows.
Fix command palette arrow keys and no-match flash.
Restore Zhuyin IME candidate marked-text handling (#3574) -- thanks @yuanganai for the report!
Fix Task Manager CPU sampling (#3588)
Fix Cmd+N window size after the last window closes (#3611) -- thanks @bigtruth for the report!
Fix Match Terminal Background sidebar toggle snapping back on (#3635)
Count cmux app RSS in Task Manager totals (#3587)
Keep Settings layered above the main window (#3612)
Forward Left/Right arrow keys to the browser surface (#3663) -- thanks @kimdane0115 for the report!
Fix Rovo Dev transcript previews (#3666)

Thanks to 12 contributors!

[0.64.3] - 2026-05-05

Added

Added Show in Finder to the workspace sidebar right-click menu.
cmux config CLI with cmux config doctor for validating cmux.json without a socket, plus cmux config path, cmux config docs, and cmux config reload aliases (#3454)

Fixed

Fix launch crash from off-main-thread CoreAnimation transactions when reapplying managed settings (#3598)
Fix file preview drag-and-drop so Finder and sidebar drops route into the hovered pane and tab bar drops insert as preview tabs (#3539)

Thanks to 2 contributors!

[0.64.2] - 2026-05-05

Fixed

Fix launch crash on v0.64.1 caused by the bundled CLI failing to load the Sentry framework (#3565) -- thanks @hyi1233 for the report!
Keep SSH sessions alive when closing a pane (#3566) -- thanks @kylejcaron for the report!
Restore sidebar scroller visibility to reflect real overflow state (#3570) -- thanks @ibagur for the report!
Fix Finder image drops into Claude Code terminals (#3567) -- thanks @streeyt for the report!
Open links in the Markdown panel via an explicit OpenURLAction (#3558) -- thanks @psh4607!
Prevent recursive lock crash on cmd-clicked Markdown viewer route and stop dropping fragment/query URLs (#3559) -- thanks @psh4607! Reported by @addisonlynch.
Stop the Claude wrapper from auto-adding bypass-permissions flags and preserve user-provided ANTHROPIC_BASE_URL and ANTHROPIC_AUTH_TOKEN through terminal startup (#3564)

Thanks to 7 contributors!

[0.64.1] - 2026-05-05

Fixed

Fix sidebar workspace close (×) button intermittently failing to appear on hover (#3546)

Thanks to 1 contributor!

@austinywang

[0.64.0] - 2026-05-05

Added

Restore prior panes and resume Claude Code, Codex, OpenCode, Gemini, and Rovo Dev sessions across relaunch, including when you close the last window with the red X (#2936, #2978, #3259, #3419, #3429, #3487, #3528, #3530, #3535)
Passkey, WebAuthn, and FIDO2 support in browser panes (#2660, #2727, #2905, #2908)
Task Manager window and cmux top CLI for window, workspace, pane, surface, and browser webview snapshots (#3290, #3471)
Finder-like file explorer sidebar with SSH support (#1963)
File preview panels in the sidebar (#3139)
Menu bar only mode (#3181)
System-wide hotkey to show and hide cmux windows (#2389)
Cursor and Gemini CLI agent integrations with setup-hooks (#2717)
iMessage mode for agent prompts (#3252)
Settings sidebar shell and unified config utility window with cmux, Ghostty, and synced tabs (#3024, #3244, #3400)
Make cmux.json the canonical settings file with JSONC parsing and legacy settings.json fallback (#3409, #3424)
Configurable cmux.json workspace and tab bar plus-button actions (#3084, #3348)
Configurable surface tab bar font size (#2645)
Configurable workspace recoloring actions, default-bound to Ctrl+Option+0 through Ctrl+Option+9 (#3327)
Allow space as a bindable key, allow keyboard shortcuts to be unbound, and make reload and rename shortcuts context-aware (#3333, #3334, #3468)
Inline recorder messages explaining shortcut rejections and offering localized Reassign for conflicts (#3035)
Help menu with cmux docs nav, Skills, Agent Integrations submenu, and skills.sh install flow (#3402)
Find in directory shortcut (#3208)
Move tabs into new workspaces (#3285)
Hover tooltips on workspace and pane tabs (#3329)
Command palette ID copy actions and copy ID context menu actions (#3183, #3247)
Command palette actions for right sidebar modes (#3408)
macOS clear glass background blur support (#3313)
Focus-neutral split-off layout command (#3484)
--layout parameter on workspace.create for programmatic split layouts (#2916) -- thanks @talldan!
Korean (ko) localization (#2885) -- thanks @say8425!
Opt-in setting to open Cmd-clicked Markdown files in the cmux Markdown viewer (#2904) -- thanks @SeongJaeSong!
cmux browser disable switch (#3256)
Markdown and plain-text variants for docs pages plus /llms.txt index for agent consumption (#3410)

Changed

Coalesce sidebar PR polling per-repo, drop checks fetch, and state-machine the probe queue to avoid GitHub rate limits (#2585, #2662)
Speed up large terminal pastes by skipping eager HTML/RTF decoding when plain text is available (#3000)
Use workspace color for selected sidebar rows and the left rail (#3038, #3082, #3310)
Improve default light and dark theme fallback (#3123)
Sidebar PR clickability defaults to on, with visibility split from clickability as a separate setting (#3273, #3492)
Make hook notifications non-blocking (#3218)
Clean up Claude session titles, render slash-command markup as readable titles, and skip meta caveats (#3211)
Apply sidebar background to right panel and consolidate sidebar settings (#3103, #3400)
Improve settings search aliases with localized variants (#3294, #3296)
Disable right sidebar horizontal scroll (#3202)
Optimize surface config reload (#3480)
Auto-hide terminal scroll bar with disable setting on TUI alt-screen (#2678, #2729)
Show Codex TUI errors in the sidebar (#3212)
Keep Cmd-Shift-N windows on the source display (#3214)
Select find text on repeated Cmd+F (#3314)
Disable Claude OSC notifications in the cmux wrapper and gate Claude OSC suppression on integration setting (#3418, #3474)
Namespace agent hook CLI commands (#3298)

Fixed

Fix shell integration not injected when Ghostty ZDOTDIR overrides the wrapper (#2778) -- thanks @michaeljauk!
Allow symlinked Ghostty config files (#2813) -- thanks @ivanrvpereira!
Fix paste only pasting first character (#2847) -- thanks @dezren39!
Prefer UTF-8 plain text in the pasteboard to avoid Mac OS Roman character loss (#2877) -- thanks @dasanworld!
Fix blank split panes after portal reveal (#2840) -- thanks @jaynora2026!
Fix workspace color picker context menu blinking (#2566)
Hide stale startup workspace portals during teardown (#2658)
Fix AX window polling stalls with app hierarchy caching (#2986)
Fix close confirmation bypass when spamming close (#2989)
Fix multi-workspace close confirmation modality (#3153)
Fix Cmd/Ctrl shortcut hint parity (#2994)
Cancel drag on Escape (#3013)
Pin regular-weight Japanese auto-fallback face (#3015)
Fix 100% CPU from ContentView publisher feedback loop (#3028)
Fix DebugEventLog NSFileHandle ObjC exception crash (#3034)
Fix main-thread blocking in workspace PR refresh (#3036)
Fix terminal blanking after OSC completion notifications (#3048)
Fix blank terminal after workspace selection (#3012)
Fix minimal-mode traffic-light inset, new-window Bonsplit tab bar, window routing, portal hit testing, drag pass-through, and pane tab rendering (#3055, #3150, #3194, #3399)
Drop stale merged PRs from the sidebar badge selection (#3063)
Fix transparent titlebar backdrop matching and sidebar tint backdrop ownership (#3179, #3382)
Fix feedback editor scrolling (#3182)
Fix bare window.open(_blank) routing in browser panes (#3262)
Fix non-ASCII Cmd+V paste when rich clipboard payloads are lossy (#3268)
Fix locale separators in sidebar identifiers (#3269)
Deduplicate numpad input across IME full-to-half-width transition (#3292)
Follow up equalize splits shortcut fixes (#3309)
Make find escape behavior consistent (#3330)
Fix unbound Cmd+Shift forwarding to terminal (#3332)
Make Ctrl+P command palette navigation remappable and Cmd+D new-tab shortcut rebindable (#3335, #3338, #3398)
Prevent shortcut recorder keys from navigating Settings (#3377)
Preserve context-separated shortcuts through recorder swaps (#3489)
Fix browser tab drag to new workspace, drops into sidebar workspaces, and terminal portal tab drop routing (#3299, #3381, #3430)
Fix Cmd+Shift+Enter pane zoom for browser panes (#3520)
Fix terminal focus after browser split (#3460)
Fix shortcut settings dispatch_once launch crash and settings-file launch crash paths (#3455, #3476)
Fix editable shortcuts from settings.json (#3462)
Fix live theme picker application, launch theme before app appearance exists, and cmux theme picker Enter from search (#3221, #3378, #3431, #3479)
Clamp Settings window away from display edge (#3436)
Fix SSH LocalCommand incompatibility with Fish shell (#3506, #3534)
Fix OMX HUD bottom pane placement (#3516)
Fix inherited Claude auth env in cmux terminals (#3519)
Fix config window to open active cmux Ghostty config (#3525)
Fix notification dismissal with stale app focus (#3532)
Persist app icon mode on the app bundle (#2884)
Fix appIcon=automatic crash on macOS Tahoe (#2833)
Fix terminal selection autoscroll past viewport edge (#2725)
Fix command-hold shortcut hints and prevent sidebar truncation (#2767)
Fix Raycast paste fallback regression (#2768)
Fix Cmd+Shift+V paste in browser pane (#2779)
Fix up/down arrow keys in browser surface (#2780)
Fix Cmd+click file path punctuation trimming (#2831)
Fix bilibili search popup opening detached window (#2836)
Fix macOS modifier desync causing idle terminal input corruption (#2855)
Fix scrollback-limit byte handling (#2927)
Fix LinkedIn external-link redirect handoff in browser pane (#2930)
Fix OpenCode bracketed paste fallback in terminal (#2971)
Fix startup hang from repeated file drop overlay install (#2972)
Fix cmux.json named workspace colors (#3149)
Keep selected workspace visible in the sidebar (#3152)
Hide portals for unmounted workspaces (#3155)
Fix Bonsplit tab bar height and selected tab separator (#3331, #3351)
Fix browser omnibar typing lag with many workspaces (#3422)
Fix nightly codesigning for nested bundles, Sparkle executables, and dock tile plugin (#2676, #2677, #2679, #2680)

Thanks to 10 contributors!

[0.63.2] - 2026-04-06

Added

Support chorded keyboard shortcuts (#2528)
Detect listening ports for remote SSH workspaces (#2398)
Editable workspace descriptions (#2475)
Claude Binary Path setting (#2514)
cmux omx and cmux omc agent integrations (#2619)
"Open Folder in VS Code (Inline)" menu item and command palette entry (#2409)
New Window entry in the Dock menu (#2340)
Reset-terminal workaround in the terminal menu (#2349)
React Grab inject button in the browser toolbar (#2373)
Hover background on split action buttons (#2271)
Cmd-click fallback for bare filenames in ls output (#2294)
Localized tab context menu and alert strings (#2422)

Changed

Relicense cmux from AGPL-3.0 to GPL-3.0 (#2364)
Update bundled Ghostty fork to latest upstream (#2379)
Sidebar PR lookups are now event-driven to reduce GitHub API load (#2453)
Keep the latest sidebar notification until it is explicitly cleared (#2623)
Switch the nightly Sparkle appcast feed to R2 (#2335, #2363, #2366)

Fixed

Fix terminals freezing when the first responder drifts off the focused surface (#2505)
Fix sidebar layout loop and CLI socket deadlocks (#2601)
Fix sidebar LazyVStack layout loop in the workspace list (#2328)
Fix focus reporting leak on pane creation (#2511)
Fix browser pane flicker during multi-split resize (#2574)
Fix browser panel resize flicker during split drag (#2513)
Fix browser pane hangs from redundant portal refreshes (#2353)
Fix browser pane dark-mode leak on light pages (#2346)
Fix DevTools pane breaking after workspace switch round-trips (#2621)
Fix sidebar background: add missing locale entries and portal resync on toggle (#2622)
Fix session restore suppression on relaunch (#2469)
Fix session restore terminal cursor focus race (#2471)
Fix terminal focus and surface recovery after layout changes (#2354)
Fix missing sidebar ports for agent-run dev servers (#2562)
Fix missing sidebar git branch metadata for workspaces (#2563)
Fix sidebar live refresh for branch and PR state (#2331)
Fix duplicate sidebar git metadata publishes (#2405)
Fix SSH password-auth bootstrap race (#2564)
Fix remote proxy notification spam with cooldown, backoff, and SSH keepalive (#2330)
Fix tmux-compat split-window surface resolution (#2351)
Fix new-split falling back to the focused surface when the target is stale (#2518) — thanks @anusheel!
Fix CLI commands briefly stealing focus (#2464)
Fix paste from Raycast and other apps using alternate plain-text UTIs (#2467)
Fix stray C insertion from Speakly dictation (#2413)
Fix Korean IME jamo leak during composition (#2529)
Stop swallowing / and ? on ABC-QWERTZ keyboard layouts (#2447)
Keep prompt colors when zsh switches local TERM to xterm-256color (#2613)
Ensure shell integrations always dispatch claude through the bundled wrapper (#2465)
Fix shell integration review regressions (#2466)
Fix React Grab Cmd+Shift+G terminal round-trip (#2615)
Suppress cmd-hover path highlighting while terminal selection is active (#2579)
Keep cmux browser Find shortcuts authoritative over page handlers (#2356)
Fix minimal-mode tab bar disappearing in fullscreen (#2375)
Fix transparent background flash during sidebar toggle (#2378)
Fix macOS 26 glass window gating (#2468)
Fix fullscreen new windows opening in the current Space (#2345)
Fix Dock persistence for manual app icons (#2360)
Fix update error details dialog overflow (#2359)
Fix Ctrl+K reaching the command palette text editor (#2394)
Keep Cmd+P stable during animated workspace title updates (#2393)
Fix Cmd+P workspace retention for the main CI workspace (#2412)
Coalesce portal sync to latest geometry to fix browser overlay drift (#2214)
Fix claude_vm_node OOM behavior and hook payload retention (#2462)
Fix GitHub star badge k formatting (#2473)
Keep GitHub stars badge stable across navigation (#2476)
Fix web header overlap (#2452)

Thanks to 3 contributors!

[0.63.1] - 2026-03-28

Fixed

Fix crash on startup after upgrading from older versions due to stale window geometry data (#2306)
Fix re-entrant displayIfNeeded crash during layout follow-up from SwiftUI geometry changes (#2305) — thanks @KyleJamesWalker!
Fix macOS compatibility with versioned geometry persistence to prevent future upgrade crashes (#2308)

Thanks to 2 contributors!

[0.63.0] - 2026-03-28

Added

Browser profile import — cookies, history, and settings from Chrome, Firefox, Safari, and more (#318, #1582, #1593)
Support window.open() popup windows in browser panes with shared OAuth context (#1150, #1600)
Minimal mode — hide the titlebar for a distraction-free terminal (#1479, #2218)
cmux.json custom commands — define project-specific actions launched from the command palette (#2011, #2122)
cmux omo command for oh-my-openagent integration (#2087, #2230, #2280)
Codex CLI hooks integration for terminal notifications (#2103)
Customizable number shortcuts for workspace switching (#1951)
Customizable sidebar selection highlight color (#1824)
Match Terminal Background sidebar color setting (#2293)
Optional single-click focus for inactive split panes (#1796)
Support image drag-and-drop into SSH terminals (#1838)
Support dropping folders onto the dock icon to open as workspaces (#1571)
Support modifier+key combinations in send-key CLI — ctrl+enter, shift+tab, arrow keys, home/end/delete/pageup/pagedown (#1994, #1920)
--name flag for new-workspace CLI command (#2160)
--no-focus flag for cmux ssh (#2227)
--direction flag for markdown open command (#1763)
Per-surface TTY exposed in cmux tree output (#2040)
set-color / clear-color workspace actions for tab color via CLI (#1873, #1833)
IntelliJ IDEA added to command palette Open Directory targets (#1860)
Open a new terminal tab from empty tab bar double-click (#1601)
Double-click custom titlebar to zoom or minimize (#2130)
Confirm before closing pinned workspaces (#1895)
Show tab name in close tab confirmation dialog (#1845)
Sidebar listening ports are now clickable to open in browser (#1844)
Ukrainian (uk) localization (#2226)
Hidden CLI command for live terminal debugging (#1599)
rc and remote-control added to command passthrough (#1539)
Export CMUX_SOCKET alongside CMUX_SOCKET_PATH in terminal env (#1991)
Dual licensing — AGPL + commercial (#2021)
Universal binary (arm64 + x86_64) for stable releases (#2287)
Add claude-teams, omo, and __tmux-compat to Go relay CLI for SSH sessions (#2238)
Warn Before Quit enforced when Cmd+Q arrives via app switcher (#2186)

Changed

Show update-available banner automatically on launch (#1651, #1543, #1575)
Restore Sparkle scheduled update checks (#1597)
New window inherits size from current window (#2124)
Restore last-surface close preference toggle (#1679)
Rename "Import From Browser" to "Import Browser Data" (#1672)
Make founders email selectable in feedback success view (#1733)
Include hardware details in feedback submissions (#1726)
Coalesce scrollbar updates during bulk output for improved performance (#2116)
Reduce shell integration prompt latency (#2109)
Skip quit confirmation for tagged DEV builds (#2288)
Use dedicated setting for sidebar port link browser preference (#2219)
Skip sidebar PR lookup on main/master branches (#2110)
Stabilize sidebar directory ordering when split focus changes (#1798)
Improve tmux notification attention routing (#1898)

Fixed

Fix Cmd+N workspace creation crashes caused by stale snapshots, ARC hotpaths, and restore-time races (#2204, #2183, #2181, #2178, #2176, #2173, #2133, #2023, #1985, #1930)
Fix ARC workspace inheritance crash and native Zig helper builds (#2283)
Fix EXC_BAD_ACCESS caused by over-releasing Ghostty font (#1496)
Fix terminal black screen on macOS 26.3.1 by dispatching Ghostty callbacks to main thread (#1937)
Fix blank terminal renders after workspace switches (#1964)
Fix stale terminal portal after restore churn (#2025)
Fix floating portal terminal after nightly update relaunch (#1696)
Fix terminal portal resync after restore-time bind (#1973)
Fix terminal find overlay crash and focus handoff (#1487)
Fix split transparency regression (#1568)
Apply background-opacity and background-blur to terminal rendering area (#1858)
Fix keyboard shortcuts not working with CJK input sources (Korean, Japanese, Russian) (#1649, #1913, #2202)
Skip CJK fallback font injection when font-family already covers glyphs (#2241)
Skip Korean from CJK font-codepoint-map auto-injection (#1700)
Fix Japanese IME confirmation Enter from executing command prematurely (#2075, #1671)
Fix Korean IME Enter handling on composition path in browser panes (#2108)
Fix AZERTY Option+Delete word delete in Claude Code (#1640)
Fix Escape key not working in terminal panels (e.g., lazygit) (#1957)
Fix unbound Cmd+Shift+key combos being silently swallowed (#1959)
Fix Cmd+W closing terminal tabs instead of About/Licenses windows (#1473)
Fix Cmd+O opening Documents folder — handle in custom shortcut handler (#2034)
Consume Cmd+number shortcuts when workspace index is out of bounds (#2033)
Fix arrow key glyph matching in customizable shortcuts (#1443)
Fix cursor movement on double-click selection (#1709)
Fix doomscroll when reviewing scrollback (#1616)
Fix browser panes rendering blank after reopen (#2141)
Fix browser portal leaking to other tabs on Bonsplit tab switch (#2000)
Fix browser freeze after pane split (#1852)
Fix browser pane video fullscreen (#1921)
Fix browser image copy pasteboard data (#1850)
Fix browser pane file drops hanging on "Uploading" (#1843)
Fix browser back navigation history handoff (#1897)
Fix browser devtools X-close persistence (#1627)
Fix browser PR metadata deadlock and BrowserPanelView hot paths (#1564)
Fix Cloudflare/CAPTCHA verification failures in browser panel (#1877)
Fix Google sign-in infinite loading in browser pane (#1493)
Fix native value setter for React compatibility in browser panes (#2059)
Fix sidebar badges not refreshing on workspace state change (#2046)
Fix sidebar PR badge detection for workspace branches and restored workspaces (#1896, #1570, #1636)
Fix sidebar notification persisting after being read (#1933)
Fix premature workspace title truncation in sidebar (#1859)
Fix pinned workspace ordering — keep pinned workspaces above pin boundary (#1503, #1505)
Fix command palette ordering for "check" query (#1740)
Fix command palette focus after terminal find (#2089)
Fix missing command palette open-in targets (#1621)
Fix all split panes appearing focused after layout restoration (#2088)
Fix panel resize stuttering when tiled with browser panels (#1969)
Fix splitter hitbox overlap and terminal scrollbar width resync (#1950)
Increase content side hit width to prevent accidental window resize (#2018)
Fix window position restore on relaunch (#2129)
Fix dock icon not auto-switching with system dark mode (#1928, #1510)
Align titlebar icons with traffic-light buttons (#1754)
Fix focused notification sound playback (#1855)
Fix laggy terminal sync during sidebar drags (#1598)
Fix spinner hang after display resolution changes (#1549)
Fix workspace layout follow-up spin loop (#1633)
Fix Ghostty resize_split keybind support (#1899)
Fix update attempt refreshing pill without actually updating (#2168, #2142, #2117)
Fix SSH control master cleanup on remote teardown (#2104)
Fix SSH cleanup after moving the last remote surface (#2123)
Fix SSH image transfer cleanup and IPv6 followups (#1907, #1904)
Fix SSH remote CLI wrapper and proxy follow-ups (#1596)
Fix nightly SSH remote daemon checksum mismatch (#2225)
Fix cmux ssh notify surface targeting (#1799)
Fix tmux compat store decoding, layout cleanup, and cross-workspace fallback (#2207)
Fix claude-teams pane anchoring with main-vertical layout (#2119)
Fix claude-hook stop teardown races (#1954)
Fix Claude Code hooks config to match actual schema (#1388)
Handle TabManager unavailable in SessionEnd/Start hooks (#1735)
Fix blocking sleep in preexec hook causing command lag (#1444)
Fix redundant focus events causing Powerlevel10k redraws (#1579)
Fix identical session autosave writes (#1732)
Fix locale page crashes under Google Translate (#1956)
Fix About Panel newline escaping (#1298)
Fix remote sidebar directory canonicalization to preserve live paths (#1800)
Fix AppleScript count windows returning 0 and working directory returning empty (#1826)
Fix PWD action routing to correct TabManager per tabId (#2147)
Fix socket returning wrong error when surface_id is provided but unresolvable (#2150)
Guard inherited terminal config against stale surfaces (#2101)
Suppress socat stdout in _cmux_send to prevent "OK" leak (#1619)
Add -r shorthand to skip session ID check in Claude wrapper (#1992)
Check git repo before running git commands to prevent TCC permission prompts (#1677)
Preserve explicit wheel scrollback against passive follow (#1965)
Fix terminal pane drag/drop handoff delay (#1837)

Removed

Remove restricted web-browser entitlement (#1727)

[0.62.2] - 2026-03-14

Added

Configurable sidebar tint color with separate light/dark mode support via Settings and config file (sidebar-background, sidebar-tint-opacity) (#1465)
Cmd+P all-surfaces search option (#1382)
cmux themes command with bundled Ghostty themes (#1334, #1314)
Sidebar can now shrink to smaller widths (#1420)
Menu bar visibility setting (#1330)

Changed

CLI Sentry events are now tagged with the app release (#1408)
Stable socket listener now falls back to a user-scoped path, and repeated startup failures are throttled (#1351, #1415)

Fixed

Command palette command-mode shortcut, navigation, and omnibar backspace or arrow-key regressions (#1417, #1413)
Stale Claude sidebar status from missing hooks, OSC suppression, and PID cleanup (#1306)
Split cwd inheritance when the shell cwd is stale (#1403)
Crashes when creating a new workspace and when inserting a workspace into an orphaned window context (#1391, #1380)
Cmd+W close behavior and close-confirmation shell-state regressions (#1395, #1386)
macOS dictation NSTextInputClient conformance and terminal image-paste fallbacks (#1410, #1305, #1361, #1358)
VS Code command palette target resolution, Ghostty Pure prompt redraws, and internal drag regressions (#1389, #1363, #1316, #1379)

[0.62.1] - 2026-03-13

Added

Cmd+T (New tab) shortcut on the welcome screen (#1258)

Fixed

Cmd+backtick window cycling skipping windows
Titlebar shortcut hint clipping (#1259)
Terminal portals desyncing after sidebar changes (#1253)
Background terminal focus retries reordering windows
Pure-style multiline prompt redraws in Ghostty
Return key not working on Cmd+Ctrl+W close confirmation (#1279)
Concurrent remote daemon RPC calls timing out (#1281)

Removed

SSH remote port proxying (reverted, will return in a future release)

[0.62.0] - 2026-03-12

Added

Markdown viewer panel with live file watching (#883)
Find-in-page (Cmd+F) for browser panels (#837, #875)
Keyboard copy mode for terminal scrollback with vi-style navigation (#792)
Custom notification sounds with file picker support (#839, #869)
Browser camera and microphone permission support (#760, #913)
Language setting for per-app locale override (#886)
Japanese localization (#819)
16 new languages added to localization (#895)
Kagi as a search provider option (#561)
Open Folder command (Cmd+O) (#656)
Dark mode app icon for macOS Sequoia (#702)
Close other pane tabs with confirmation (#475)
Flash Focused Panel command palette action (#638)
Zoom/maximize focused pane in splits (#634)
cmux tree command for full CLI hierarchy view (#592)
Install or uninstall the cmux CLI from the command palette (#626)
Clipboard image paste in terminal with Cmd+V (#562, #853)
Middle-click X11-style selection paste in terminal (#369)
Honor Ghostty background-opacity across all cmux chrome (#667)
Setting to hide Cmd-hold shortcut hints (#765)
Focus-follows-mouse on terminal hover (#519)
Sidebar help menu in the footer (#958)
External URL bypass rules for the embedded browser (#768)
Telemetry opt-out setting (#610)
Browser automation docs page (#622)
Vim mode indicator badge on terminal panes (#1092)
Sidebar workspace color in CLI sidebar_state output (#1101)
Prompt before closing window with Cmd+Ctrl+W (#1219)
Jump to Latest button in notifications popover (#1167)
Khmer localization (#1198)
cmux claude-teams launcher (#1179)

Changed

Command palette search is now async and decoupled from typing for reduced lag
Fuzzy matching improved with single-edit and omitted-character word matches
Replaced keychain password storage with file-based storage (#576)
Fullscreen shortcut changed to Cmd+Ctrl+F, and Cmd+Enter also toggles fullscreen (#530)
Workspace rename shortcut Cmd+Shift+R now uses the command palette flow
Renamed tab color to workspace color in user-facing strings (#637)
Feedback recipient changed to [email protected] (#1007)
Regenerated app icons from Icon Composer (#1005)
Moved update logs into the Debug menu (#1008)
Updated Ghostty to v1.3.0 (#1142)
Welcome screen colors adapted for light mode (#1214)
Notification sound picker width constrained (#1168)

Fixed

Frozen blank launch from session restore race condition (#399, #565)
Crash on launch from an exclusive access violation in drag-handle hit testing (#490)
Use-after-free in ghostty_surface_refresh after sleep/wake (#432, #619)
Startup SIGSEGV by pre-warming locale before SentrySDK.start (#927)
IME issues: Shift+Space toggle inserting a space (#641, #670), Ctrl fast path blocking IME events, browser address bar Japanese IME (#789, #867), and Cmd shortcuts during IME composition
CLI socket autodiscovery for tagged sockets (#832)
Flaky CLI socket listener recovery (#952, #954)
Side-docked dev tools resize (#712)
Dvorak Cmd+C colliding with the notifications shortcut (#762)
Terminal drag hover overlay flicker
Titlebar controls clipped at the bottom edge (#1016)
Sidebar git branch recovery after sleep/wake and agent checkout (#494, #671, #905)
Browser portal routing, uploads, and click focus regressions (#908, #961)
Notification unread persistence on workspace focus
Escape propagation when the command palette is visible (#847)
Cmd+Shift+Enter pane zoom regression in browser focus (#826)
Cross-window theme background after jump-to-unread (#861)
window.open() and target=_blank not opening in a new tab (#693)
Terminal wrap width for the overlay scrollbar (#522)
Orphaned child processes when closing workspace tabs (#889)
Cmd+F Escape passthrough into terminal (#918)
Terminal link opens staying in the source workspace (#912)
Ghost terminal surface rebind after close (#808)
Cmd+plus zoom handling on non-US keyboard layouts (#680)
Menubar icon invisible in light mode (#741)
Various drag-handle crash fixes and reentrancy guards
Background workspace git metadata refresh after external checkout
Markdown panel text click focus (#991)
Browser Cmd+F overlay clipping in portal mode (#916)
Voice dictation text insertion (#857)
Browser panel lifecycle after WebContent process termination (#892)
Typing lag reduction by hiding invisible views from the accessibility tree (#862)
CJK font fallback preventing decorative font rendering for CJK characters (#1017)
Inline VS Code serve-web token exposure via argv (#1033)
Browser pane portal anchor sizing (#1094)
Pinned workspace notification reordering (#1116)
cmux --version memory blowup (#1121)
Notification ring dismissal on direct terminal clicks (#1126)
Browser portal visibility when terminal tab is active (#1130)
Browser panes reloading when switching workspaces (#1136)
Sidebar PR badge detection (#1139)
Browser address bar disappearing during pane zoom (#1145)
Ghost terminal surface focus after split close (#1148)
Browser DevTools resize loop and layout stability (#1170, #1173, #1189)
Typing lag from sidebar re-evaluation and hitTest overhead (#1204)
Browser pane stale content after drag splits (#1215)
Terminal drop overlay misplacement during drag hover (#1213)
Hidden browser slot inspector focus crash (#1211)
Browser devtools hide fallback (#1220)
Browser portal refresh on geometry churn (#1224)
Browser tab switch triggering unnecessary reload (#1228)
Devtools side dock guard for attached devtools (#1230)

Thanks to 24 contributors!

[0.61.0] - 2026-02-25

Added

Command palette (Cmd+Shift+P) with update actions and all-window switcher results (#358, #361)
Split actions and shortcut hints in terminal context menus
Cross-window tab and workspace move UI with improved destination focus behavior
Sidebar pull request metadata rows and workspace PR open actions
Workspace color schemes and left-rail workspace indicator settings (#324, #329, #332)
URL open-wrapper routing into the embedded browser (#332)
Cmd+Q quit warning with suppression toggle (#295)
cmux --version output now includes commit metadata

Changed

Added light mode and unified theme refresh across app surfaces (#258) — thanks @ijpatricio for the report!
Browser link middle-click handling now uses native WebKit behavior (#416)
Settings-window actions now route through a single command-palette/settings flow
Sentry upgraded with tracing, breadcrumbs, and dSYM upload support (#366)
Session restore scope clarification: cmux restores layout, working directory, scrollback, and browser history, but does not resume live terminal process state yet

Fixed

Startup split hang when pressing Cmd+D then Ctrl+D early after launch (#364)
Browser focus handoff and click-to-focus regressions in mixed terminal/browser workspaces (#381, #355)
Caps Lock handling in browser omnibar keyboard paths (#382)
Embedded browser deeplink URL scheme handling (#392)
Sidebar resize cap regression (#393)
Terminal zoom inheritance for new splits, surfaces, and workspaces (#384)
Terminal find overlay layering across split and portal-hosted layouts
Titlebar drag and double-click zoom handling on browser-side panes
Stale browser favicon and window-title updates after navigation

Thanks to 7 contributors!

[0.60.0] - 2026-02-21

Added

Tab context menu with rename, close, unread, and workspace actions (#225)
Cmd+Shift+T reopens closed browser panels (#253)
Vertical sidebar branch layout setting showing git branch and directory per pane
JavaScript alert/confirm/prompt dialogs in browser panel (#237)
File drag-and-drop and file input in browser panel (#214)
tmux-compatible command set with matrix tests (#221)
Pane resize divider control via CLI (#223)
Production read-screen capture APIs (#219)
Notification rings on terminal panes (#132)
Claude Code integration enabled by default (#247)
HTTP host allowlist for embedded browser with save and proceed flow (#206, #203)
Setting to disable workspace auto-reorder on notification (#215)
Browser panel mouse back/forward buttons and middle-click close (#139)
Browser DevTools shortcut wiring and persistence (#117)
CJK IME input support for Korean, Chinese, and Japanese (#125)
--help flag on CLI subcommands (#128)
--command flag for new-workspace CLI command (#121)
rename-tab socket command (#260)
Remap-aware bonsplit tooltips and browser split shortcuts (#200)

Fixed

IME preedit anchor sizing (#266)
Cmd+Shift+T focus against deferred stale callbacks (#267)
Unknown Bonsplit tab context actions causing crash (#264)
Socket CLI commands stealing macOS app focus (#260)
CLI unix socket lag from main-thread blocking (#259)
Main-thread notification cascade causing hangs (#232)
Favicon out-of-sync during back/forward navigation (#233)
Stale sidebar git branch after closing a split
Browser download UX and crash path (#235)
Browser reopen focus across workspace switches (#257)
Mark Tab as Unread no-op on focused tab (#249)
Split dividers disappearing in tiny panes (#250)
Flaky browser download activity accounting (#246)
Drag overlay routing and terminal overlay regressions (#218)
Initial bonsplit split animation flicker
Window top inset on new window creation (#224)
Cmd+Enter being routed as browser reload (#213)
Child-exit close for last-terminal workspaces (#254)
Sidebar resizer hitbox and cursor across portals (#255)
Workspace-scoped tab action resolution
IDN host allowlist normalization
setup.sh cache rebuild and stale lock timeout (#217)
Inconsistent Tab/Workspace terminology in settings and menus (#187)

Changed

CLI workspace commands now run off the main thread for better responsiveness (#270)
Remove border below titlebar (#242)
Slimmer browser omnibar with button hover/press states (#271)
Browser under-page background refreshes on theme updates (#272)
Command shortcut hints scoped to active window (#226)
Nightly and release assets are now immutable (no accidental overwrite) (#268, #269)

[0.59.0] - 2026-02-19

Fixed

Fix panel resize hitbox being too narrow and stale portal frame after panel resize

[0.58.0] - 2026-02-19

Fixed

Fix split blackout race condition and focus handoff when creating or closing splits

[0.57.0] - 2026-02-19

Added

Terminal panes now show an animated drop overlay when dragging tabs

Fixed

Fix blue hover not showing when dragging tabs onto terminal panes
Fix stale drag overlay blocking clicks after tab drag ends

[0.56.0] - 2026-02-19

No user-facing changes.

[0.55.0] - 2026-02-19

Changed

Move port scanning from shell to app-side with batching for faster startup

Fixed

Fix visual stretch when closing split panes
Fix omnibar Cmd+L focus races

[0.54.0] - 2026-02-18

Fixed

Fix browser omnibar Cmd+L causing 100% CPU from infinite focus loop

[0.53.0] - 2026-02-18

Changed

CLI commands are now workspace-relative: commands use CMUX_WORKSPACE_ID environment variable so background agents target their own workspace instead of the user's focused workspace
Remove all index-based CLI APIs in favor of short ID refs (surface:1, pane:2, workspace:3)
CLI send and send-key support --workspace and --surface flags for explicit targeting
CLI escape sequences (\n, \r, \t) in send payloads are now handled correctly
--id-format flag is respected in text output for all list commands

Fixed

Fix background agents sending input to the wrong workspace
Fix close-surface rejecting cross-workspace surface refs
Fix malformed surface/pane/workspace/window handles passing through without error
Fix --window flag being overridden by CMUX_WORKSPACE_ID environment variable

[0.52.0] - 2026-02-18

Changed

Faster workspace switching with reduced rendering churn

Fixed

Fix Finder file drop not reaching portal-hosted terminals
Fix unfocused pane dimming not showing for portal-hosted terminals
Fix terminal hit-testing and visual glitches during workspace teardown

[0.51.0] - 2026-02-18

Fixed

Fix menubar and right-click lag on M1 Macs in release builds
Fix browser panel opening new tabs on link click

[0.50.0] - 2026-02-18

Fixed

Fix crashes and fatal error when dropping files from Finder
Fix zsh git branch display not refreshing after changing directories
Fix menubar and right-click lag on M1 Macs

[0.49.0] - 2026-02-18

Fixed

Fix crash (stack overflow) when clicking after a Finder file drag
Fix titlebar folder icon briefly enlarging on workspace switch

[0.48.0] - 2026-02-18

Fixed

Fix right-click context menu lag in notarized builds by adding missing hardened runtime entitlements
Fix claude shim conflicting with --resume, --continue, and --session-id flags

[0.47.0] - 2026-02-18

Fixed

Fix sidebar tab drag-and-drop reordering not working

[0.46.0] - 2026-02-18

Fixed

Fix broken mouse click forwarding in terminal views

[0.45.0] - 2026-02-18

Changed

Rebuild with Xcode 26.2 and macOS 26.2 SDK

[0.44.0] - 2026-02-18

Fixed

Crash caused by infinite recursion when clicking in terminal (FileDropOverlayView mouse event forwarding)

[0.38.1] - 2026-02-18

Fixed

Right-click and menubar lag in production builds (rebuilt with macOS 26.2 SDK)

[0.38.0] - 2026-02-18

Added

Double-clicking the sidebar title-bar area now zooms/maximizes the window

Fixed

Browser omnibar Cmd+L now reliably refreshes/selects-all and supports immediate typing without stale inline text
Omnibar inline completion no longer replaces typed prefixes with mismatched suggestion text

[0.37.0] - 2026-02-17

Added

"+" button on the tab bar for quickly creating new terminal or browser tabs

[0.36.0] - 2026-02-17

Fixed

App hang when omnibar safety timeout failed to fire (blocked main thread)
Tab drag/drop not working when multiple workspaces exist
Clicking in browser WebView not focusing the browser tab

[0.35.0] - 2026-02-17

Fixed

App hang when clicking browser omnibar (NSTextView tracking loop spinning forever)
White flash when creating new browser panels
Tab drag/drop broken when dragging over WebView panes
Stale drag timeout cancelling new drags of the same tab
88% idle CPU from infinite makeFirstResponder loop
Terminal keys (arrows, Ctrl+N/P) swallowed after opening browser
Cmd+N swallowed by browser omnibar navigation
Split focus stolen by re-entrant becomeFirstResponder during reparenting

[0.34.0] - 2026-02-16

Fixed

Browser not loading localhost URLs correctly

[0.33.0] - 2026-02-16

Fixed

Menubar and general UI lag in production builds
Sidebar tabs getting extra left padding when update pill is visible
Memory leak when middle-clicking to close tabs

[0.32.0] - 2026-02-16

Added

Sidebar metadata: git branch, listening ports, log entries, progress bars, and status pills

Fixed

localhost and 127.0.0.1 URLs not resolving correctly in the browser panel

Changed

browser open now targets the caller's workspace by default via CMUX_WORKSPACE_ID

[0.31.0] - 2026-02-15

Added

Arrow key navigation in browser omnibar suggestions
Browser zoom shortcuts (Cmd+/-, Cmd+0 to reset)
"Install Update and Relaunch" menu item when an update is available

Changed

Open browser shortcut remapped from Cmd+Shift+B to Cmd+Shift+L
Flash focused panel shortcut remapped from Cmd+Shift+L to Cmd+Shift+H
Update pill now shows only in the sidebar footer

Fixed

Omnibar inline completion showing partial domain (e.g. "news." instead of "news.ycombinator.com")

[0.30.0] - 2026-02-15

Fixed

Update pill not appearing when sidebar is visible in Release builds

[0.29.0] - 2026-02-15

Added

Cmd+click on links in the browser opens them in a new tab
Right-click context menu shows "Open Link in New Tab" instead of "Open in New Window"
Third-party licenses bundled in app with Licenses button in About window
Update availability pill now visible in Release builds

Changed

Cmd+[/] now triggers browser back/forward when a browser panel is focused (no-op on terminal)
Reload configuration shortcut changed to Cmd+Shift+,
Improved browser omnibar suggestions and focus behavior

[0.28.2] - 2026-02-14

Fixed

Sparkle updates from 0.27.0 could fail to detect newer releases because release build numbers were behind the latest published appcast build number
Release GitHub Action failed on repeat runs when SUPublicEDKey / SUFeedURL already existed in Info.plist

[0.28.1] - 2026-02-14

Fixed

Release build failure caused by debug-only helper symbols referenced in non-debug code paths

[0.28.0] - 2026-02-14

Added

Optional nightly update channel in Settings (Receive Nightly Builds)
Automated nightly build and publish workflow for main when new commits are available

Changed

Settings and About windows now use the updated transparent titlebar styling and aligned controls
Repository license changed to GNU AGPLv3

Fixed

Terminal panes freezing after repeated split churn
Finder service directory resolution now normalizes paths consistently

[0.27.0] - 2026-02-11

Fixed

Muted traffic lights and toolbar items on macOS 14 (Sonoma) caused by clipsToBounds default change
Toolbar buttons (sidebar, notifications, new tab) disappearing after toggling sidebar with Cmd+B
Update check pill not appearing in titlebar on macOS 14 (Sonoma)

[0.26.0] - 2026-02-11

Fixed

Muted traffic lights and toolbar items in focused window caused by background blur in themeFrame
Sidebar showing two different textures near the titlebar on older macOS versions

[0.25.0] - 2026-02-11

Fixed

Blank terminal on macOS 26 (Tahoe) — two additional code paths were still clearing the window background, bypassing the initial fix
Blank terminal on macOS 15 caused by background blur view covering terminal content

[0.24.0] - 2026-02-09

Changed

Update bundle identifier to com.cmuxterm.app for consistency

[0.23.0] - 2026-02-09

Changed

Rename app to cmux — new app name, socket paths, Homebrew tap, and CLI binary name (bundle ID remains com.cmuxterm.app for Sparkle update continuity)
Sidebar now shows tab status as text instead of colored dots, with instant git HEAD change detection

Fixed

CLI set-status command not properly quoting values or routing --tab flag

[0.22.0] - 2026-02-09

Fixed

Xcode and system environment variables (e.g. DYLD, LANGUAGE) leaking into terminal sessions

[0.21.0] - 2026-02-09

Fixed

Zsh autosuggestions not working with shared history across terminal panes

[0.17.3] - 2025-02-05

Fixed

Auto-update not working (Sparkle EdDSA signing was silently failing due to SUPublicEDKey missing from Info.plist)

[0.17.1] - 2025-02-05

Fixed

Auto-update not working (Sparkle public key was missing from release builds)

[0.17.0] - 2025-02-05

Fixed

Traffic lights (close/minimize/zoom) not showing on macOS 13-15
Titlebar content overlapping traffic lights and toolbar buttons when sidebar is hidden

[0.16.0] - 2025-02-04

Added

Sidebar blur effect with withinWindow blending for a polished look
--panel flag for new-split command to control split pane placement

[0.15.0] - 2025-01-30

Fixed

Typing lag caused by redundant render loop

[0.14.0] - 2025-01-30

Added

Setup script for initializing submodules and building dependencies
Contributing guide for new contributors

Fixed

Terminal focus when scrolling with mouse/trackpad

Changed

Reload scripts are more robust with better error handling

[0.13.0] - 2025-01-29

Added

Customizable keyboard shortcuts via Settings

Fixed

Find panel focus and search alignment with Ghostty behavior

Changed

Sentry environment now distinguishes between production and dev builds

[0.12.0] - 2025-01-29

Fixed

Handle display scale changes when moving between monitors

Changed

Fix SwiftPM cache handling for release builds

[0.11.0] - 2025-01-29

Added

Notifications documentation for AI agent integrations

Changed

App and tooling updates

[0.10.0] - 2025-01-29

Added

Sentry SDK for crash reporting
Documentation site with Fumadocs
Homebrew installation support (brew install --cask cmux)
Auto-update Homebrew cask on release

Fixed

High CPU usage from notification system
Release workflow SwiftPM cache issues

Changed

New tabs now insert after current tab and inherit working directory

[0.9.0] - 2025-01-29

Changed

Normalized window controls appearance
Added confirmation panel when closing windows with active processes

[0.8.0] - 2025-01-29

Fixed

Socket key input handling
OSC 777 notification sequence support

Changed

Customized About window
Restricted titlebar accessories for cleaner appearance

[0.7.0] - 2025-01-29

Fixed

Environment variable and terminfo packaging issues
XDG defaults handling

[0.6.0] - 2025-01-28

Fixed

Terminfo packaging for proper terminal compatibility

[0.5.0] - 2025-01-28

Added

Sparkle updater cache handling
Ghostty fork documentation

[0.4.0] - 2025-01-28

Added

cmux CLI with socket control modes
NSPopover-based notifications

Fixed

Notarization and codesigning for embedded CLI
Release workflow reliability

Changed

Refined titlebar controls and variants
Clear notifications on window close

[0.3.0] - 2025-01-28

Added

Debug scrollback tab with smooth scroll wheel
Mock update feed UI tests
Dev build branding and reload scripts

Fixed

Notification focus handling and indicators
Tab focus for key input
Update UI error details and pill visibility

Changed

Renamed app to cmux
Improved CI UI test stability

[0.1.0] - 2025-01-28

Added

Sparkle auto-update flow
Titlebar update UI indicator

[0.0.x] - 2025-01-28

Initial releases with core terminal functionality:

GPU-accelerated terminal rendering via Ghostty
Tab management with native macOS UI
Split pane support
Keyboard shortcuts
Socket API for automation

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Changelog

[0.64.22] - 2026-08-03

Fixed

Thanks to 5 contributors!

[0.64.21] - 2026-08-02

Added

Changed

Fixed

Thanks to 13 contributors!

[0.64.20] - 2026-07-19

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Thanks to 5 contributors!

[0.64.19] - 2026-07-14

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Thanks to 1 contributor!

[0.64.18] - 2026-07-14

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Thanks to 29 contributors!

[0.64.17] - 2026-06-23

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Removed

Thanks to 12 contributors!

[0.64.16] - 2026-06-15

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Changed

Fixed

Thanks to 26 contributors!

[0.64.15] - 2026-06-12

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Thanks to 12 contributors!

[0.64.14] - 2026-06-06

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Changed

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Thanks to 5 contributors!

[0.64.13] - 2026-06-04

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Changed

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Thanks to 8 contributors!

[0.64.12] - 2026-06-02

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Thanks to 8 contributors!

[0.64.11] - 2026-06-01

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Thanks to 7 contributors!

[0.64.10] - 2026-05-23

Added

Changed

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Thanks to 3 contributors!

[0.64.9] - 2026-05-21

Fixed

Thanks to 3 contributors!

[0.64.8] - 2026-05-21

Added

Changed

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Thanks to 4 contributors!

[0.64.7] - 2026-05-19

Added

Changed

Fixed

Thanks to 14 contributors!

[0.64.6] - 2026-05-14

Added

200 KiB

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