[BUG] Title: [BUG] Blank screen on launch when app is quit while in fullscreen mode (macOS)

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 the Claude desktop app is quit while its window is in fullscreen mode, relaunching the app restores the fullscreen state but renders the window completely blank. Exiting fullscreen after relaunch immediately fixes the rendering and the app works normally.

What Should Happen?

The app should render its content normally when relaunching into fullscreen, the same way it does when relaunching in a non-fullscreen window.

Error Messages/Logs

There are none.

Steps to Reproduce

1. Open the Claude desktop app
2. Put the window into fullscreen mode (green button or Control+Command+F)
3. Quit the app (not just close the window — full quit)
4. Relaunch the app
5. App reopens in fullscreen but the window content is completely blank

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.74 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

This is not about the CLI, it's about the Desktop App. I installed it via Home Brew if that matters.