I have a Win 10 laptop that i hooked to a Vizio older flat screen tv that I use as monitor 2 and some generic OLD flat screen monitor as monitor 3. I usually run FF on mon. 2. I noticed my laptop was running slow. Firefox was eating resources. I figured i would close some tabs and then my window and restart it. I use the "open previous windows and tabs" ticked. So I can pick up where I left off. Once closed I it I looked at Task Manager and one instance of it still running. I stop it via Task Manager, rerun FF and see that 2 instances of it re running. I untick "open previous windows and tabs" and shut down FF. When I re start FF it looks fine I open Task Manager and my FF window does a quick slide to the right and disappeared. in task manager I find a search button when you right click FF in the drop down menu. FF quick slides left and Task Manager closes. Why is this happening to me?