[BUG] Claude Code crashes in desktop app cowork window 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?

Claude Code version: [run claude --version in your terminal and paste the result here]

What I was doing: Working on ERP SW in a cowork window using the desktop app on Mac

What happened: The app showed "Claude Code crashed" message. I restarted the app and tried resuming from an earlier message, but it still crashes.

What Should Happen?

i can't do any thing, whatever i'm writing, i have the same error

Error Messages/Logs

Claude Code crashed
Try sending your message again. If it keeps happening, share feedback so we can investigate.

You can restart the conversation from an earlier message.

Steps to Reproduce

any writing i have the same message

Claude Model

Sonnet (default)

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

Claude Sonnet 4.6

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_