Claude Desktop freezes completely when Computer Use (Teach Mode / Claude in Chrome) is initiated

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 Computer Use is initiated via the Claude Desktop app — specifically Teach Mode or the Claude in Chrome MCP — the entire app UI freezes. The permission approval dialog becomes unresponsive, the chat cannot be scrolled, and no interactions are possible. The app must be force-quit to recover.

What Should Happen?

The approval dialog should remain interactive and the chat should stay scrollable while waiting for user input during Computer Use initiation.

Error Messages/Logs

Steps to Reproduce

1. Open Claude Desktop (desktop app / Claude Code)
2. Initiate a Computer Use action — specifically either Teach Mode or a task that invokes the Claude in Chrome MCP
3. When the app begins requesting approval to control the screen, observe the desktop app becomes completely unresponsive
4. Cannot approve/deny, cannot scroll chat, must force-quit

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

1.5354.0

Claude Code Version

macOS 15.6 (Build 24G84)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

No error messages displayed — app hangs silently. No relevant entries in macOS system log (log show) for Claude process. No crash reports in ~/Library/Logs/DiagnosticReports/. Issue affects both Teach Mode and Claude in Chrome MCP flows. Freeze occurs at the point of approval/initiation, not during an active session.