Since this is a firefox thread, I have a very annoying bug that I haven't had much luck searching on... any luck here?

I really like the picture-in-picture feature of firefox. However, if I have a video in PiP mode and I click pause, randomly about 5-10 seconds later it unpauses and keeps playing. This happens on both Hulu and Netflix.. on multiple computers and has been going on for quite some time.

Seems like such a common thing I'm surprised it hasn't been fixed.