I have run into a problem today where if i open a video into theater mode on youtube i can only click on the bottom half inch of the video, can click no-where else on the video itself. this only happens if it open automatically in theater mode(due to cookies), if it openings into normal viewing it works fine, even if i expand it to theater mode, but the the next video i open up it happens again. I have tried updating both firefox, windows drivers and graphics drivers, aswell as a hard refresh of firefox, still getting the same error.