[BUG] UI - Chat content not visible when switching back to a previous chat

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 switching between chats, the previously viewed chat fails to reload properly upon returning to it — only the Claude icon is displayed and the chat content is not visible or scrollable. Typing a message in the affected chat temporarily resolves the issue, but the problem reoccurs every time you switch back to a chat. This issue occurs both in the Mac app and in the browser."

Appeared first time 2 days ago after I pressed "command + 1" (by accident) but it should just switch to the "Chat" part.

Attached 2 screen recording in Safari Browser and Mac App

What Should Happen?

The chat content should load and display correctly every time you navigate back to a previously viewed chat.

Error Messages/Logs

Steps to Reproduce

1. Open any chat
2. Switch to a different chat
3. Switch back to the previous chat
4. Observe that only the Claude icon is displayed and the chat content is neither visible nor scrollable
5. Type a message — content becomes visible again
6. Switch to another chat and return — issue reoccurs

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

Claude 1.7196.1 (abcd65) 2026-05-16T00:57:20.000Z

Claude Code Version

2.1.143

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

https://github.com/user-attachments/assets/4efa351b-0c77-415e-b5e4-98bbc8c68e0c
https://github.com/user-attachments/assets/899bbe30-49cd-4a0f-a822-51016317a5f1