[BUG] Entire terminal/console content cloned/duplicated on terminal resize or focus switch

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?

Console content duplicates itself on terminal resize or focus switch

What Should Happen?

Nothing

Error Messages/Logs

Steps to Reproduce

See video for how to reproduce in different terminals (Powershell default + Powershell 7 + Git Bash): https://youtu.be/Z5pjENciZcc

Claude Model

Not sure / Multiple models

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

Claude Code v2.0.64

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PyCharm terminal

Additional Information

Probably related to, but not exactly the same as: https://github.com/anthropics/claude-code/issues/13384 and infinite scroll issues