I am running Ubuntu 18.04.1 and Crossover 18. I have Battle.net and Overwatch installed and I can get Overwatch to run, but in gameplay, the mouse moves up continuously so I am staring at the ceiling. I can pull it down of course, but it goes right back up. Just thought I would post this just in case anyone has an idea, and as I work on the issue myself (so I can update it later). Thanks!