Changelog

​

Added

• Command palette (Cmd+Shift+P) with update actions and all-window switcher results
• 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
• URL open-wrapper routing into the embedded browser
• Cmd+Q quit warning with suppression toggle
• cmux --version output now includes commit metadata

​

Changed

• Added light mode and unified theme refresh across app surfaces
• Browser link middle-click handling now uses native WebKit behavior
• Settings-window actions now route through a single command-palette/settings flow
• Sentry upgraded with tracing, breadcrumbs, and dSYM upload support
• 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
• Browser focus handoff and click-to-focus regressions in mixed terminal/browser workspaces
• Caps Lock handling in browser omnibar keyboard paths
• Embedded browser deeplink URL scheme handling
• Sidebar resize cap regression
• Terminal zoom inheritance for new splits, surfaces, and workspaces
• 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

​

Added

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

​

Fixed

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

​

Changed

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

​

Fixed

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

​

Fixed

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

​

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

​

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

​

Fixed

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

​

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

​

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