[BUG] The approval of the plan transitions into a phase as if the plan has been rejected.

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 confirm the plan in planning mode and select the first option, which should reset the context and start the plan implementation mode with an empty context, I remain in the same session, and Claude Code tells me that I rejected the plan and asks why I rejected it. The reaffirmation of the plan once again leads to the same consequences as before.

What Should Happen?

It should be a routine action that has happened before: clearing the session, and then the implementation of the plan should begin.

Error Messages/Logs

Steps to Reproduce

1. enter planning mode.
2. discuss and create a plan for implementation.
3. once the plan is finalized, Claude Code suggests four options. We choose the first option—session cleanup and plan implementation.
4. after that, Claude Code remains in the same session but behaves as if I rejected the plan, asking what the problem is, what’s wrong, and what can be improved, and so on.
5. Selecting the implementation option again leads back to the same step, as if the plan was rejected.

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

2.1.71

Claude Code Version

2.1.72

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

Xterm

Additional Information

_No response_