Sorry , Yes I saw that it uses the same API. in particular mozRequestFullScreen for FF
I meant the demo works directly from the ..github page. So FF does work correctly at fullscreen on sites.
So I suspect the there could be a size thing from the Hype Containers that FF cannot deal with when in fullscreen ??
May be related to this problem..
I just tested the base.js code ( placed in a Hype function) and it works as expected on Hype scenes. So need to look at it and see what it is doing differrent .