[BUG] Mouse tracking not disabled when Claude Code is suspended with Ctrl-Z

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 Claude Code is suspended using Ctrl-Z, it leaves mouse tracking enabled in the terminal. This causes other terminal programs to receive unwanted mouse enter/exit events.

In my case, when i wanted to use the terminal scrollback, bash responds to scroll-events by cycling through the command history instead.

What Should Happen?

When Claude Code is suspended, it should disable mouse tracking so other terminal programs aren't affected.

Error Messages/Logs

Steps to Reproduce

1. Open a fresh terminal (using xfce4-terminal)
2. ls -R | head -1000
3. Start Claude Code
4. Suspend Claude Code with Ctrl-Z
5. Scroll up (attempt to skim through old terminal output)

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.210 (Claude Code)

Platform

Anthropic API

Operating System

Other Linux

Terminal/Shell

Other

Additional Information

I've confirmed this only for xfce4-terminal, not others. I doubt it's specific to xfce4-terminal.

This exact issue has been reported but then closed automatically.

I have

    { 
      "env": { "CLAUDE_CODE_DISABLE_MOUSE_CLICKS": "1" },
      "tui": "fullscreen",
      "editorMode": "normal",
      /* ... */
    }