Full screen video problem with 2 monitors

Yesterday I decided to abandon windows and completely move to linux (for the third time so far). I installed Linux Mint 17.1 Cinnamon and it's working great.

I use two monitors and I'm used to put a youtube video in fullscreen on the second monitor while I work on the first monitor. The problem is that the video exits fullscreen mode whenever I do anything on the other monitor.

Does anyone have an idea to work around this?

Thanks

you can try redoing youre video driver