Linux: Seems to have two separate windows

[splidje]

Seems to have two separate windows; a blank one with window controls (title bar, resize handles) and the UI itself, but without window controls. Moving/resizing the former affects the latter, though.

[timlehr]

What distro / desktop are you using?

[splidje]

Distro is Rocky 9.

X11 Gnome desktop.

Have seen it happen with both Gnome Standard and Cinnamon.