Full screen is lost sometimes

[bsquare]

Hi,

I'd like to play TOME full screen but there is issue sometimes (for instance, when creating a new game), where the game switches automatically to Windowed mode or something like that.
Such a way, there is a significative invisible offset between the mouse cursor and the effective position in the game (so it's barely possible to click on good position, buttons & so).

I used to switch to OS (GNU/Linux Fedora), and move back to the game, which makes it generally switch back to fullscreen; but it's very annoying.

I tried borderless windowed, but there is a missing part at the bottom of the screen (maybe equivalent to the Gnome Shell bar at top of the screen); so it's not usable.

Eventually, I tried windowed mode, it's working, but I don't like it; having the title bar all the time.

Is there any fix for this issue(s) ?