[BUG] Please disable 'run tests in the background' - its too undercooked for production

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?

Please disable 'run tests in the background' - its too undercooked for production.

I haven't even been able to find all the problems but here's two examples:

1. Watching it run a failing test over and over again for over an hour, not realising its hanging. Instead it just ran it over and over hoping this time would be the time it worked.
2. Watching it run a different set of failing tests over and over incredibly quickly. Escape doesn't stop background processes and it wouldn't acknowledge my instructions (presumably because it was so enthusiastic about tests). Killing the tests just made it restart them (while continuing to ignore my instructions). I had to hard kill the client which isn't super common.

What Should Happen?

It should not do this.

Error Messages/Logs

Steps to Reproduce

N/A

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Latest

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_