[BUG] 2.0.73 CJK Garbled text

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="610" height="225" alt="Image" src="https://github.com/user-attachments/assets/428a0e49-02df-4e7e-8e15-48f85ae6bfde" />

What Should Happen?

Normal display of CJK text

Error Messages/Logs

As shown in the screenshot

Steps to Reproduce

1. Set up to communicate in Chinese/Japanese and Korean in CLAUDE.md
2. Open the Zsh terminal in VSCode.
3. Start working
4. View terminal display

Claude Model

Other

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.0.73

Platform

Other

Operating System

macOS

Terminal/Shell

Warp

Additional Information

_No response_