Hello! I have a quite simple suggestion. An option which would essentially lock the mouse inside the game window when the escape menu isn't active. I'm playing the game with mouse steering and right now I am forced to disable my extra monitor and run full screen because the game will lose focus if I turn too far to the sides. For some reason, the thing I describe already occurs sometimes when the game force itself to windowed mode from fullscreen, but it doesn't occur when I'm just normally in full screen. A very simple thing to fix, and it would help greatly.
Bump. I have the same issue too. Dual monitors and driving with mouse steering is near impossible without the mouse going off the screen is hard turns. IT happens even if im in full screen too.