[BUG] Pinned previous user message overlaps response text and hides content (Desktop/Web UI)

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?

As of a recent update (observed 2026-05-13 morning JST), the previous user message is now persistently pinned to the upper-left of the conversation pane. For long inputs the pinned block expands to cover a large portion of the screen and overlaps Claude's response text, making the reply unreadable. The feature itself (showing the previous input for reference) is useful, but it should not occlude the response.

What Should Happen?

• Pinned input should auto-truncate or collapse when the message is long, with click-to-expand.
• Alternatively, provide a setting/toggle to disable the pinned previous-input feature.
• Response text must never be visually occluded by the pinned block.

Error Messages/Logs

Steps to Reproduce

1. Open Claude Code (Desktop app) and start a conversation in any project.
2. Send a long multi-paragraph user message (10+ lines, e.g., a list with multiple bullet points).
3. Wait for Claude to respond.
4. Observe: the previous user message remains pinned at the upper-left of the conversation pane.
5. The pinned block overlaps and visually hides a significant portion of Claude's response text.
6. There is no visible UI control to dismiss, collapse, or disable the pinned block.

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

Unknown — worked normally as of 2026-05-12

Claude Code Version

2.1.81 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Other

Additional Information

This occurs in the Claude Code Desktop application on macOS 26.0.1 (not the CLI). The pinned input feature appears to have been introduced in a recent update — it was not present on 2026-05-12. Screenshot attached showing the overlap (a long Japanese-language input covers approximately the left half of Claude's response).

Suggestions:

• Add a max-height with scroll for the pinned block.
• Add a collapse/expand toggle.
• Add a settings option to opt out entirely.

<img width="1306" height="885" alt="Image" src="https://github.com/user-attachments/assets/5248757c-3f5f-42e9-b2a7-5f39b9e8e042" />