Clever idea!
I didn't have issues with the game itself but the fullscreen toggle is broken. At least for me.
For some reason playing in fullscreen made the game cut itself in half. The crosshair was on the right and I barely could see anything. Playing in windowed mode "fixed" it tho the screen was very tiny :/
(now thinking about it, it was probably an issue with my monitors because they're not the same resolution)