[BUG] Claude Code is duplicating itself on Windows Powershell

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="1735" height="1333" alt="Image" src="https://github.com/user-attachments/assets/d3da1538-41d7-4d01-b50c-3f6fa780f763" />

What Should Happen?

-

Error Messages/Logs

Steps to Reproduce

Use Claude Code on Windows Powershell can resize the Window

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

v2.0.74

Platform

Other

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

<img width="1700" height="1087" alt="Image" src="https://github.com/user-attachments/assets/df80e3e0-4b57-4e84-aa68-4093fdd53dac" />