Top navigation bar and sidebar become transparent unexpectedly

What version of the Codex App are you using (From “About Codex” dialog)?

Version 26.601.21317 • Released 03-Jun-2026

What subscription do you have?

ChatGPT Plus

What platform is your computer?

Windows 10 x64

What issue are you seeing?

The top navigation bar and left sidebar are always transparent in the Codex desktop application. The issue is consistently reproducible and occurs every time I use the app.

Because of this, content behind the application is visible through the top bar and sidebar, making text and controls harder to read. The transparency appears to be applied incorrectly and does not match the rest of the UI.

This is not an intermittent issue. It happens continuously and persists even after restarting and reinstalling the application.

Feedback ID: 019e8ed4-1a63-73e1-ac13-962507c44807

What steps can reproduce the bug?

1. Open the Codex desktop application on Windows.
2. Observe the top navigation bar and left sidebar.
3. Both UI elements are transparent immediately after launch.
4. The issue remains present throughout the session.
5. Restarting or reinstalling the application does not resolve the problem.

What is the expected behavior?

<img width="1364" height="926" alt="Image" src="https://github.com/user-attachments/assets/8694ee90-b55a-456a-b831-23cf87675c6a" />

Additional information

The issue occurs on every launch of the application and is fully reproducible. Screenshot attached.