[BUG] Claude Windows Desktop App GUI Problem

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?

My Claude Windows Desktop app suddenly change the GUI to something extremely hard to read and with an incredibly stupid layout. I can't find the settings to revert the functionality.
I need to remove the colors from the conversation, revert the plan mode modal and the big tabs in the middle.
Please tell me where I can set the old skin in the settings, downgrade or inject custom CSS.

What Should Happen?

Settings to revert to old GUI.

Error Messages/Logs

Steps to Reproduce

Open the app in newest version

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

1.2773.0

Platform

Other

Operating System

Windows

Terminal/Shell

Other

Additional Information

_No response_