This is my 5th time this has happened to me, where I log in and my screen starts scrolling to the bottom of the page. I am not pressing anything prior to that either. Usually it happens on my compound and I just have to leave and come back home a few times and it fixes it. Now its happening when I am leaving my compound and going on a mission.
I think the game may be The Last Stand - Dead Zone. I've never experienced this problem, but it's strange that it only happens on your compound. Sorry, I can't be more helpful.
Yes, its The Last Stand - Dead Zone. I will see if its my mouse, next time it happens will click on all the buttons. Its the only game this happens with though.