macOS Codex desktop app: window controls are overlapped at 100% zoom

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

26.623.101652

What subscription do you have?

ChatGPT Plus

What platform is your computer?

Darwin 22.6.0 x86_64 i386

What issue are you seeing?

macOS Codex desktop app: at 100% zoom, the top-left window controls are overlapped by the app header/sidebar controls. At 90% zoom it no longer happens.

Steps to reproduce:

1. Open Codex desktop app on macOS.
2. Set zoom to 100%.
3. Look at the top-left window controls.

Expected:
The macOS window controls should remain visible and unobstructed.

Actual:
The window controls are partially overlapped by the Codex header/sidebar controls.

Workaround:
Set zoom to 90%.

<img width="646" height="388" alt="Image" src="https://github.com/user-attachments/assets/1b925835-ea80-423f-a305-c53b508c79fd" />

What steps can reproduce the bug?

1. Open the Codex desktop app on macOS.
2. Set the app zoom to 100%.
3. Look at the top-left corner of the app window.

Result:
The macOS window controls are overlapped by the Codex header/sidebar controls.

Expected:
The macOS window controls should remain visible and unobstructed.

Additional note:
If the app zoom is changed to 90%, the overlap no longer happens.

What is the expected behavior?

_No response_

Additional information

_No response_