App remains inactive after switching from Windowed Apps mode to Full Screen mode

I have encountered the following issue on iPadOS. Has anyone experienced this issue or reported it before?

Steps to Reproduce

1. Enable Windowed Apps mode in Settings.
2. Launch the Settings app and another app (App X), and display both in windowed mode.
3. Use the Settings app to completely cover App X (App X becomes inactive at this point).
4. From the Settings app, enable Full Screen Apps mode.
5. Bring App X to the foreground.

Expected Result

App X becomes active when brought to the foreground.

Actual Result

Even after bringing App X to the foreground, it immediately becomes inactive.
The issue persists even if App X is restarted.
To resolve the issue, it is necessary to either restart the iPad or switch back to Windowed Apps mode.

Verified OS Versions

• iPadOS 26.5: Reproducible
• iPadOS 26.4.2: Reproducible
• iPadOS 26.2: Not reproducible
• iPadOS 26.0.1: Not reproducible

Additional Information

According to the console logs, App X appears to remain inactive because the deactivation reason "sceneOverlap" persists.