[SOLVED]Youtube fullscreen is buggy

So, I’ve hooked my pc to my TV and this problem showed up. The play/pause, buffer and quality etc. bar which normally dissapeares to the bottom, won’t go away. It does go down, but it’s still visible. Now when I use my laptop normally it won’t go away at all anymore.
I’ve googled this but could not find any similar problems.
Could this possibly have anything to do with the resolution? Although it’s the same resolution as before, when it worked fine. (1366×768)
This is the problem:

Answer #1
It happens, YT gets buggy sometimes, flash player doesn’t seem to work fine. Try pasting the link into other browser, it works sometimes.
I usually download the video with jdownloader when i really want to see something
Answer #2
Just close and open browser again.
Answer #3
Shadowic replied: Just close and open browser again.
Did, restarted PC and didn’t help as well,
Reinstalled firefox and that did the trick. So thanks for your help you 2 !