[BUG] Long text in responses getting cut off on the right side in Claude Code macOS app

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?

<img width="1502" height="466" alt="Image" src="https://github.com/user-attachments/assets/ae025061-67ae-4695-b6bb-aa4d22768065" />

Since upgrading to latest version of mac app, text in responses is being cut off on the right

What Should Happen?

Text should not be cut off

Error Messages/Logs

Steps to Reproduce

Ask a question that requires a long answer or code snippet

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

1.1.2512

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Other

Additional Information

_No response_