Window control icons overlap in title bar on Windows 11 (3440×1440 ultrawide, 100% scaling)

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?

The window control icons in the top-left title bar (sidebar toggle, panel toggle, search, etc.) are rendered on top of each other instead of being laid out horizontally.

The issue occurs every time Claude Desktop starts and persists after:

• Completely uninstalling the application
• Installing the latest version
• Restarting Windows

The problem is present even on a clean installation.

Environment:

• OS: Windows 11
• Display: 3440×1440 ultrawide
• Display scaling: 100%
• Claude Desktop version: 1.21459.0

Steps to reproduce:

1. Launch Claude Desktop.
2. Observe the icons in the top-left title bar.
3. The icons are compressed and overlap each other on every launch.

What Should Happen?

The title bar icons should be displayed horizontally with normal spacing and should remain fully clickable.

Error Messages/Logs

No error messages are shown. This appears to be a UI rendering/layout issue.

Steps to Reproduce

1. Launch Claude Desktop.
2. Open Claude Code.
3. Observe the top-left title bar.
4. The title bar icons (sidebar toggle, panel toggle, search, etc.) overlap each other instead of being laid out horizontally.
5. The issue occurs on every launch, including after reinstalling Claude Desktop.

Claude Model

None

Is this a regression?

I don't know

Last Working Version

I don't know

Claude Code Version

claude --version1.21459.0.0

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

The issue persists after completely uninstalling and reinstalling Claude Desktop.

Display: 3440x1440 ultrawide
Display scaling: 100%

Screenshot attached.