Hi, you can try typing about:permissions into the address bar then press Enter to open the Permissions Manager, and change Full Screen preferences there.

If your question is resolved by this or another answer, please take a minute to let us know. Thank you.

Thank you Scribe, but no fix. I play games at facebook and pogo and neither show up in the list of sites in permissions. Why can't I select allow in all sites? The only 2 options are: always ask and block. This is a crock of shit! This is one of the most moronic things that I have heard of in a while. 1st of all, you have to look for the icon to go full screen and if you click on it, that should be all the permission that you need, not that you should need permission to do anything that you want on your own friggin' computer. And if you accidentally click on that icon it's not hard to figure out how to get out of it when another stupid pop-up appears when the cursor gets too close to the top of the page (another annoying tidbit) with instructions to escape. Please fix this nonsense of permissions ignorance. If anything, you should be asking us for permission to install this stupid bullshit. If you have ideas like these then make them add-ons so we have the right to choose.

Maddog1969 said

When trying to play games or watch videos in full screen an annoying permission pop-up asking to allow, how do I get rid of this stupid ass feature? If you happen to know who created (highly unlikely, but...) this, please slap them for me. What could be an actually good reason for this feature? A person has to actually look for the icon to click to go full screen, so why ask if they want to allow it? That is just plain friggin' STUPID!