Windows desktop app: "New Thread" is not clickable when sidebar is expanded, and "Back to App" in Settings is also not clickable

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

Codex 26.409.20454

What subscription do you have?

Other

What platform is your computer?

windows 11

What issue are you seeing?

I found two UI click issues in the Codex desktop app on Windows.

1. When the left sidebar is expanded, the "New Thread" button at the top of the sidebar is visible but not clickable.
2. If I collapse the left sidebar, the "New Thread" icon becomes clickable and works normally.
3. In the Settings page, the "Back to App" button is also not clickable.

Because the "New Thread" action works after collapsing the sidebar, this may be related to an invisible overlay, hitbox, or click-handling issue in the expanded sidebar state. The Settings "Back to App" button may be affected by the same or a similar UI interaction bug.

What steps can reproduce the bug?

1. Open the Codex desktop app on Windows.
2. Keep the left sidebar expanded.
3. Click the "New Thread" button at the top of the sidebar.
4. Notice that nothing happens.
5. Collapse the left sidebar.
6. Click the "New Thread" icon again.
7. Notice that it is clickable in the collapsed state.
8. Open Settings.
9. Click "Back to App".
10. Notice that it is not clickable.

What is the expected behavior?

• "New Thread" should be clickable whether the sidebar is expanded or collapsed.
• "Back to App" in Settings should always be clickable and return to the main app view.

Additional information

• Platform: Windows
• UI language: Chinese
• Observed on: 2026-04-13
• I can attach a screenshot showing the location of the "New Thread" button in the expanded sidebar.