[BUG] ALT/TAB doesnt work on Claude windows client

### Preflight Checklist

- [x] I have searched [existing issues](https://github.com/anthropics/claude-code/issues?q=is%3Aissue%20state%3Aopen%20label%3Abug) 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 I use the Claude windows client, sometimes alt-tab stops working. This problem seems to be fairly consistent once it starts: windows/tab or alt tab dont work, closing and reopening the client doesnt work either. Bug seems to happen both in screenless and windowed modii. When working in split-screen and alt tabbing from the other program to something full-screen, only that side of the screen gets replaced.What does work is minimizing the client.

### What Should Happen?

alt tab should work as intended

### Error Messages/Logs

```shell

```

### Steps to Reproduce

open client
start session
try to alt tab

### Claude Model

Sonnet (default)

### Is this a regression?

I don't know

### Last Working Version

_No response_

### Claude Code Version

Claude 1.52386.6 (612f3f) 2026-09-13T00:45:40.000Z

### Platform

Anthropic API

### Operating System

Windows

### Terminal/Shell

Windows Terminal

### Additional Information

_No response_