If you use Full Screen a lot you'll notice that when your mouse cursor is near the top of the screen it often activates the appearance of the Address and Menu bars and whatever other toolbars you have working. The whole screen suddenly jolts down. Then up as soon as the cursor moves down. I cannot imagine the mindset of the designer that implemented it; must have been someone poor on the keyboard that uses the mouse as much as possible. Alt+D activates the toolbar! We don't need any mouse cursor to display it. Especially as we need to type anyway to use the Address Bar. I searched Add-Ons but couldn't find anything. Any ideas of how to stop the cursor from activating the toolbars? Anything in about:config maybe? Anything I can edit in the files? Please! Let's get some sanity back to Firefox Full Screen.