I have very recently started using a MacBook Pro, with Mac OS X High Sierra for work purposes. I have two external monitors, on each of which a fullscreen application is displayed. Whenever I move my mouse pointer from one fullscreen app to the top of the other fullscreen app, it switches focus to that app. The problem is, this usually happens only on accident, as I have no purpose of using such a feature intentionally. So anytime I think I'm about to enter a some text in one app, after moving my mouse physically out of the way, it moves the mouse cursor to the top of a different fullscreen app, thus switching focus to that app, and me entering input in the the wrong app.
Can this be disabled in Mac OS X?