we are not using YouTube videos but may have to upgrade version to fix this as it seems to be an HTML5 issue with the browsers

nope, tried this and still won't work, full screen button is still missing, anyone else have an idea?

we are having problems with the full screen button disappearing within an i-frame. We've added the Full Screen within the frame code but find that it is still not working correctly. It seems that if the browser opens with Flash it works but if the browser opens the i-frame with HTML5 the button is gone. Or at least this looks to be the problem, it seems randomly working and then not working We are using version 1.16.4 Any suggestions?