I'm using MacOSX 10.8.2 and safari 6.0.2 and when using the video player on full screen, when i click out of safari to another app (skype, tweet deck etc) it kicks me out to the webpage and often to just a black video with just audio. This happened before with the HTML5 player, but even the flash player is doing it now since the reboot.
Yah, I am also having the same issue running dual monitors. Running Win 7 64bit, Firefox 18.0.2 an Flash 11.5. It didn't seem to do this on the old site, but I am sure the code is different now. And yes, I did tell it ro remember to 'allow full screen'. Thanks for looking into it.
Having the same issue with second monitor, also when the video is full screen it locks me out of the controls.
Didn't have issue switching between windows and screens on the last build, hope you guys can find a workaround soon because it's ruining my ability to procrastinate subtly