[BUG] iterm2's claude code window auto input with \^]

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?

When I enter Claude Code in iTerm2, I can see the input prompt and the / command works as expected. However, when I switch to another window and then return to iTerm2, the prompt disappears, and the / command no longer works. I have to press the delete key a few times to restore normal behavior. After pressing Enter and checking the history, I noticed that \^] is automatically added when I switch back to iTerm2. Could you please help me understand what might be causing this and how to resolve it? Thank you so much.

What Should Happen?

Expected: No matter how I switch between windows, I should be able to call up commands with / immediately, without needing to press the delete key several times.

Error Messages/Logs

Steps to Reproduce

1. open iterm2 and input claude and enter
2. there's some prompt and use / and some command showed for me
3. switch window to chrome and return to iterm2
4. prompt is gone and use / can't see nothing
5. press delete key and everythins is ok

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

v2.0.5

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

_No response_