codex - 💡(How to fix) Fix UI rendering corruption at certain responsive widths on macOS

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

Version 26.506.21252 (2575)

What subscription do you have?

Plus

What platform is your computer?

Darwin 24.6.0 x86_64 i386

What issue are you seeing?

Codex Desktop has app-wide UI rendering corruption on macOS at certain responsive window widths.

The issue appears as ghosted/duplicated stale UI content, clipped panels, and misaligned page content.

Observed examples:

• On the main new-chat screen, washed-out duplicated UI appears below the composer.
• On the Plugins page, plugin cards/text are clipped or painted in the wrong place.
• The issue happens when the sidebar collapses/gets hidden.
• The issue also happens at other widths where the main content container has visible whitespace around it.
• The issue disappears when I resize the Codex window to a width where the main content container fills the available area with no side whitespace.
• The issue returns when I resize back to the sidebar-collapsed layout or another width where there is whitespace around the container.

This persists after reinstalling the latest Codex Desktop version. Issue happens on light and dark modes.

<img width="1427" height="890" alt="Image" src="https://github.com/user-attachments/assets/4d38447e-3628-453d-a3c9-b5fe0fb3d974" /> <img width="1425" height="888" alt="Image" src="https://github.com/user-attachments/assets/66f8f713-1599-4b46-9d0f-811fc27e298c" />

What steps can reproduce the bug?

1. Open Codex Desktop on macOS.
2. Resize the app window to a width where either:
   • the sidebar collapses/gets hidden, or
   • the main content container has visible whitespace around it.
3. Open either the main new-chat screen or the Plugins page.
4. Observe ghosted/duplicated stale content, clipped panels, or misaligned content.
5. Resize the window to a width where the main content container fills the available area with no side whitespace.
6. Observe that the rendering issue disappears.
7. Resize back to a width where the sidebar collapses or the container has side whitespace.
8. Observe that the rendering issue returns.

I tried the following and the issue still persists:

• Cmd+0
• Cmd+R
• fully quitting and reopening Codex
• toggling fullscreen
• resizing the window
• reinstalling the latest Codex Desktop version

What is the expected behavior?

The UI should reflow and render cleanly at all supported responsive window widths, including when the sidebar collapses and when the main content container has side whitespace.

There should be no stale/duplicated ghost content, clipping, or misalignment on the main chat screen, Plugins page, or other Codex pages.

Additional information

This appears tied to responsive/container layout widths. It is not isolated to the Plugins page; it also affects the main new-chat screen.

Screenshots attached:

1. Plugins page showing clipped/misaligned rendering
2. Main new-chat screen showing ghosted duplicate content below the composer