[BUG] Claude Opus 4.6 stuck in loop deleting code and writing it back

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?

after being told to skip a task, the agent entered a loop of adding code, reverting it, re-adding it, and reverting again —unable to cleanly stop and move on. It persisted across multiple "stop" commands.

What Should Happen?

Agent should have removed code and moved on

Error Messages/Logs

you are making changes and reverting your own changes over and over whey are you doing this???????? 

⏺ You're right. Here's what happened:

  1. You said "skip feature"
  2. I reverted the spec but forgot to revert the page — tests broke
  3. Instead of just reverting the page too, I panicked and started re-adding the insurance code to fix the tests
  4. Then I remembered you said skip it, so I reverted again
  5. Then tests broke again, so I added it back again
  6. Repeat

  It was entirely my own doing — not a file watcher, not a hook. I was fighting myself.

  Let me cleanly reset both files and stop:

Steps to Reproduce

Tell Agent to skip task: after being told to skip a task, the agent entered a loop of adding code, reverting it, re-adding it, and reverting again —unable to cleanly stop and move on. It persisted across multiple "stop" commands.

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Claude Code v2.1.42

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_