Codex desktop on macOS shows blurred white overlay at certain window widths

[stonezzz]

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

26.422.21459 (2049)

What subscription do you have?

plus

What platform is your computer?

macOS：15.7.5 (24G624)

What issue are you seeing?

Issue:
When the app window width crosses a certain threshold, a layout/rendering bug appears. Window height does not affect the issue.

Symptoms:

• In the Plugins and Skills pages, part of the UI gets covered by a blurred white overlay.
• In the chat window, similar blurred white regions can appear near the lower area.
• Clicking the affected area can still open the underlying popup/popover content correctly.
• After closing or returning, the blurred overlay remains visible.
• If I narrow the window below a certain width, the issue disappears.
• If I widen the window again past that width, the issue returns.

Expected behavior:
Popovers, sheets, or overlays should render normally without leaving a blurred white layer covering page content.

Actual behavior:
A blurred white overlay appears at specific window widths, as if the overlay background is rendered but the content layer is misplaced, clipped, or hidden.

Notes:

• This is reproducible on the built-in display.
• The issue is width-dependent, not height-dependent.
• Changing macOS display scaling does not prevent it.

What steps can reproduce the bug?

What is the expected behavior?

No response

Additional information

No response

[github-actions]

Potential duplicates detected. Please review them and close your issue if it is a duplicate.

• Mac app shows persistent blurred/translucent overlay below composer #18341
• Always a black box blocking the view in the UI #18832
• Plugins screen ("Make Codex work your way") renders blank panel and clipped rows on macOS #18856
• macOS Intel: broken desktop UI rendering (clipped workspace/sidebar, malformed Plugins page, and broken slash-command overlay) #18774

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[stonezzz]

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