New
#111
Try to un-maximize Firefox and stretch it all the way to the left edge of the screen, also stretch it vertically, top to bottom, so that it takes up 75% of the left portion of the screen. Then maximize it and again un-maximize. Window doesn't change size or position just slightly from the edges of the screen? Same thing also happens when I open up a Youtube video fullscreen and go out of fullscreen while having the Firefox window un-maximized.
Maybe I should do a clean install of Windows 10 then, maybe the problem is some conflict that arose during upgrade or something...