[BUG] Plan mode content is collapsed/hidden — forces user to request it again, causing duplication

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 using plan mode, the plan content is collapsed under a "Claude's Plan" bullet point. The actual plan details are not visible — the UI jumps straight to the "Accept this plan?" prompt with options (Yes and auto-accept / Yes and manually approve edits / No, keep planning).

Since I can't see what the plan contains, I have to select "No, keep planning" or ask Claude to show the plan. When I do, it regenerates/displays the plan again, resulting in duplicated plan content in the conversation.

What Should Happen?

The plan content should be expanded and readable by default before the "Accept this plan?" prompt appears. Users need to review the plan before deciding whether to accept it.

Error Messages/Logs

Steps to Reproduce

1. Start Claude Code in VS Code
2. Give Claude a task that triggers plan mode (or use /plan)
3. Claude generates a plan — but the content appears collapsed under a "Claude's Plan" label
4. The "Accept this plan?" dialog appears immediately without the plan being visible
5. Select "No, keep planning" or ask to see the plan
6. Plan content now appears, but duplicated

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.63 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

• IDE: VS Code
• OS: Mac Mini
• Plugins installed: 13 (code-review, commit-commands, context7, explanatory-output-style, feature-dev, frontend-design, github, learning-output-style, playwright, plugin-dev, and others)

<img width="712" height="442" alt="Image" src="https://github.com/user-attachments/assets/8e053f6d-ad41-4223-8281-06cb06dccffd" />