[BUG] Bug: Claude Desktop App (Cowork) - Layout broken, buttons displaced and screen cut off on Mac

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Bug Description

The Claude desktop app (Cowork mode) displays severe UI layout issues on Mac. Buttons are displaced/misaligned and half of the screen content is cut off, making the app unusable.

System Information

• Device: MacBook Pro
• OS: macOS [tu versión específica]
• App: Claude for Desktop (Cowork mode)
• Display: Built-in display (default resolution)

Steps to Reproduce

1. Open Claude Desktop app
2. Switch to Cowork mode
3. Observe layout issues

Troubleshooting Already Attempted

• Resized and maximized app window
• Fully closed and restarted app multiple times
• Deleted Claude cache folder at ~/Library/Application Support/Claude
• Reinstalled the application
• Reset app preferences via Terminal: defaults delete com.anthropic.claudefordesktop
• Verified display resolution set to Default

Expected Behavior

App should display correctly with proper button alignment and full content visibility.

Actual Behavior

Severe text cutoff and misalignment issues where main content area has text partially cut off at edges.

Screenshots

[Adjunta tu captura de pantalla aquí]

<img width="1184" height="965" alt="Image" src="https://github.com/user-attachments/assets/fc97ffb7-ee50-46f3-aecf-a000df808ae8" />

<img width="1199" height="796" alt="Image" src="https://github.com/user-attachments/assets/74d90faa-ab57-4967-91a5-52176d9bd4a0" />

What Should Happen?

The Claude desktop app (Cowork, code) should open with the correct layout — all buttons properly positioned, the sidebar and chat area fully visible, with no content cut off. The interface should be fully functional and usable.

Error Messages/Logs

No error messages appear. The issue is purely visual: the layout is broken on every launch. Buttons are displaced and part of the screen is cut off. No crash logs found.

Troubleshooting already completed:
- Deleted ~/Library/Application Support/Claude (cache, GPUCache, window-state.json, etc.)
- Reinstalled the app
- Ran: defaults delete com.anthropic.claudefordesktop
- Display resolution is set to Default
- MacBook Pro, macOS, built-in display

Steps to Reproduce

1. Install the Claude desktop app (Cowork mode) on macOS
2. Open the application
3. The layout is immediately broken — buttons are displaced and part of the screen is cut off on every launch

Note: The issue is not related to any specific action within the app. It happens every time the app opens, from the very first moment.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Claude 1.2581.0 (f10398) 2026-04-14T17:16:40.000Z

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_