[BUG] Claude is making changes in ? (ping-pong mode) without asking

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 in ? (ping-pong) mode, Claude made file edits without showing the confirmation dialog. The edits were applied directly as if in auto-accept mode.

Additionally, after the edits were applied, a spurious ## Exited Plan Mode system message appeared even though I was never in plan mode - I was in ? mode the entire time.

This suggests the mode state tracking is broken/corrupted.

What Should Happen?

In ? (ping-pong) mode:

1. When Claude calls the Edit tool, a diff should be shown
2. User should be prompted to approve/reject the change
3. Edit only applied after explicit approval

No "Exited Plan Mode" message should appear unless actually exiting plan mode.

Error Messages/Logs

Steps to Reproduce

1. Start Claude Code in ? (ping-pong) mode
2. Ask Claude to make a code change (e.g., "change label from X to Y")
3. Claude calls Edit tool
4. BUG: Edit applies immediately without confirmation prompt
5. BUG: "Exited Plan Mode" message appears despite never being in plan mode

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.15

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

<img width="1290" height="972" alt="Image" src="https://github.com/user-attachments/assets/64794705-8c56-49b8-98dd-42fbd54f61aa" />
<img width="1344" height="830" alt="Image" src="https://github.com/user-attachments/assets/8fa06125-3f52-4b5f-b01a-d8fb4d98b88e" />