Just a toggle for Mouse Capture On Active Window would be enough to make most people happy, if feasible.

Im sure some care about true fullscreen for more technical reasons, but mouse-ing “out of window” and being focused on something else on click (when your trying to click in SC) is a pain in the butt in certain scenarios.

If we can toggle mouse cap then it at least “feels like fullscreen” in game.

I’ve fixed the mouse confine recently. If SC is focused in fullscreen and the console is not open the mouse shouldn’t be able to leave the window. Does this still happen for you on the latest build?