I am having the same problem: I have two monitors on a Surface Pro tablet on Windows 10. I have three fences that came up on the tablet. When I tried to move fence one from the tablet to a monitor, it disappeared, but fences two and three remained. Periodically fence one reappears and two and three disappear. The fences appear and disappear as I move them from one screen to the other. When I have had Fence one, two and three disappeared and when I had Fence two and three, Fence one disappeared. At this point I have Fences one and two. Help!