[BUG] Agent View: UI freezes after navigating back from session with left arrow (Windows)

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?

After entering a session in Agent View and pressing the left arrow to return to the session list, the entire UI freezes. No keyboard input is accepted — cannot navigate, type, or dismiss.
▎ Only recovery is killing the process via Task Manager.

What Should Happen?

Returning to the agent list should restore full interactivity and allow navigating between sessions.

Error Messages/Logs

No error messages. UI silently freezes with no output.

Steps to Reproduce

1. Run claude agents
2. Start 2+ sessions from the agent list
3. Press right arrow / Enter to open a session
4. Press left arrow to return to the agent list
5. UI is now completely frozen — no input accepted

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.143

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

_No response_