Moves the controls under the video and makes the UI look like it was before august 2015
< Spätná väzba na Youtube UI Fix
I've tried to replicate this, and it all seems to work for me. But I couldn't test it with the latest version of chrome (can't update or install chrome for some reason).
Do you have any other scripts/styles installed? If so, try disabling all of them and see if the problem continues. If it does, then a screenshot can be very useful to me...
I've also rewritten the script a little (to make it more readable to me), perhaps that solved the problem by accident?
Don't work anymore
The progress bar is now under the windows edge.