# cmux 0.64.12: Diff Viewer Shortcut, Markdown Zoom, Prompt & Remote SSH Fixes

[ Changelog](https://cmux.com/docs/changelog)


June 2, 2026

### Diff Viewer Shortcut

Open the diff viewer with a keyboard shortcut, configurable and editable in Settings alongside every other cmux shortcut.

### Markdown Viewer Zoom

The Markdown viewer gains font size and zoom controls, so you can scale rendered docs up or down without leaving the pane.

### Feed Behind Beta Features

The Feed is now gated behind Beta Features and off by default, mirroring how the Dock is gated, so it only appears when you opt in.

### Prompt & Remote SSH Fixes

Starship and other custom bash prompts no longer go static: the prompt bootstrap composes with your existing PROMPT\_COMMAND instead of overwriting it. And \`cmux ssh\` now reports remote PTY allocation failures loudly instead of failing silently when a plain ssh would have worked.

### Restored Sidebar Views & Scrollback Colors

The right-click sidebar view switcher and built-in views (Default Workspaces, Project Worktrees, and others) are back after a 0.64.11 regression. Restored session scrollback no longer keeps a previous theme's colors, fixing white-on-white history after a theme change.

Added

-   Configurable keyboard shortcut to open the diff viewer, editable in Settings ([#5178](https://github.com/manaflow-ai/cmux/pull/5178))
-   Font size and zoom controls in the Markdown viewer ([#5163](https://github.com/manaflow-ai/cmux/pull/5163))

Changed

-   Gate the Feed behind Beta Features (mirroring Dock), off by default ([#5174](https://github.com/manaflow-ai/cmux/pull/5174))
-   Improve the terminal text context menu ([#5135](https://github.com/manaflow-ai/cmux/pull/5135)) -- thanks @azooz2003-bit!
-   Rank visible title matches above hidden metadata in the workspace switcher ([#5148](https://github.com/manaflow-ai/cmux/pull/5148))
-   Build the release app with the macOS 26 SDK ([#5042](https://github.com/manaflow-ai/cmux/pull/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](https://github.com/manaflow-ai/cmux/pull/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](https://github.com/manaflow-ai/cmux/pull/5186)) -- thanks @windyslow for the report!
-   Fix a main-thread hang from focus-surface broadcast re-entrancy triggered by custom shortcuts ([#5108](https://github.com/manaflow-ai/cmux/pull/5108)) -- thanks @wzh4464 for the report!
-   Restore the right-click sidebar view switcher and built-in views (Default Workspaces, Project Worktrees, and others) ([#5182](https://github.com/manaflow-ai/cmux/pull/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](https://github.com/manaflow-ai/cmux/pull/5175))
-   Fix the browser Web Inspector reopening by itself after manual close and navigation ([#5180](https://github.com/manaflow-ai/cmux/pull/5180))
-   Honor the Settings rebinding of Global Search by parsing package object-form `cmux.json` shortcut bindings ([#5143](https://github.com/manaflow-ai/cmux/pull/5143))
-   Fix Claude fork and resume failing when the session had changed directories ([#5154](https://github.com/manaflow-ai/cmux/pull/5154))
-   Fix titlebar shortcut-hint pills clipped at the bottom on macOS 26.5 ([#5145](https://github.com/manaflow-ai/cmux/pull/5145))
-   Fall back to the default sidebar when extensions are disabled ([#5127](https://github.com/manaflow-ai/cmux/pull/5127)) -- thanks @azooz2003-bit!
-   Stabilize the git metadata FSEvents watcher to stop an event storm ([#5131](https://github.com/manaflow-ai/cmux/pull/5131)) -- thanks @azooz2003-bit! and @randybias for the report!
-   Avoid E2BIG when the SSH startup script exceeds `MAX_ARG_STRLEN` ([#5133](https://github.com/manaflow-ai/cmux/pull/5133)) -- thanks @lauzierj!

Contributors

[![austinywang](https://cmux.com/_next/image?url=https%3A%2F%2Fgithub.com%2Faustinywang.png%3Fsize%3D48&w=48&q=75)austinywang](https://github.com/austinywang) [![azooz2003-bit](https://cmux.com/_next/image?url=https%3A%2F%2Fgithub.com%2Fazooz2003-bit.png%3Fsize%3D48&w=48&q=75)azooz2003-bit](https://github.com/azooz2003-bit) [![lauzierj](https://cmux.com/_next/image?url=https%3A%2F%2Fgithub.com%2Flauzierj.png%3Fsize%3D48&w=48&q=75)lauzierj](https://github.com/lauzierj) [![lawrencecchen](https://cmux.com/_next/image?url=https%3A%2F%2Fgithub.com%2Flawrencecchen.png%3Fsize%3D48&w=48&q=75)lawrencecchen](https://github.com/lawrencecchen) [![randybias](https://cmux.com/_next/image?url=https%3A%2F%2Fgithub.com%2Frandybias.png%3Fsize%3D48&w=48&q=75)randybias](https://github.com/randybias) [![windyslow](https://cmux.com/_next/image?url=https%3A%2F%2Fgithub.com%2Fwindyslow.png%3Fsize%3D48&w=48&q=75)windyslow](https://github.com/windyslow) [![wzh4464](https://cmux.com/_next/image?url=https%3A%2F%2Fgithub.com%2Fwzh4464.png%3Fsize%3D48&w=48&q=75)wzh4464](https://github.com/wzh4464) [![xzjncu](https://cmux.com/_next/image?url=https%3A%2F%2Fgithub.com%2Fxzjncu.png%3Fsize%3D48&w=48&q=75)xzjncu](https://github.com/xzjncu)

[ cmux 0.64.11](https://cmux.com/docs/changelog/0.64.11) [cmux 0.64.13 ](https://cmux.com/docs/changelog/0.64.13)

Canonical: https://cmux.com/docs/changelog/0.64.12

Documentation index: https://cmux.com/llms.txt