Cannot use Super Key on X11

Hi,

The app seems to inhibit the super key when I am playing a game in full screen on X11. It works fine on Wayland or when no game has been launched yet, however.

I hope you could look into this.

Thank you

Start by reproducing the Super key inhibition on X11 while a game is fullscreen, comparing it with Wayland and with no game launched. The payload names no files, tests, or entry points, so trace the app's fullscreen and keyboard-input handling. Done means the Super key works during fullscreen games on X11 without regressing the reported working cases.

Written by the indexing model from the issue text.