[BUG] Claude Code exited planning mode without my approval

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?

I was iterating on a plan with Claude Code via the VS Code plugin in VS Code (not via the integrated terminal), and I entered some text into "Tell claude what to do instead" when it prompted me to accept a plan. Claude then exited plan mode and started implementing.

What Should Happen?

Claude code should not exit plan mode unless a plan is approved.

Error Messages/Logs

I asked Claude to explain how it got there, and here's what it said:

> The "Tell Claude what to do instead" input was routed back to me as a regular user message, but the system also emitted the "User has approved your plan" reminder. So the harness treated your inline comment as a full acceptance with edits, even though your intent was "I'm giving you feedback, keep planning."

> That's a genuine UX/plumbing bug — the "Tell Claude what to do instead" affordance on the approval dialog shouldn't be indistinguishable from "accepted with notes." Worth filing at https://github.com/anthropics/claude-code/issues with this screenshot; it's a clear repro.

Steps to Reproduce

The steps I took are clear, but it's the first time I've seen it, so it will likely be difficult to reproduce. Either way though, the UX plumbing should be such that anything other than an explicit approval is a rejection.

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.111

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Other

Additional Information

_No response_