Html5 player didnt show controlling buttons at youtube - Tor Browser bundel Version 5.5.3 / Win8.1-64bit

Hello, under windows 8.1,10 the Html 5 player at YOUTUBE didn't show the control buttons - like play or volume control. The whole control bar is missing! Also you cant accelerate a video by moving the time history button at the controls, that resets the video.

Under Linux - Debian, everything works like a charm..

best regards

Trac:
Username: anocrypt1901