Fullscreen not entered correctly on iOS 13

[stalgiag]

Hi!

The fullscreen API requests aren't working correctly with iOS and any browser. I have tested on:

I am testing with this which is the same code as the official WebXR Immersive VR sample. My only change was updating it to use the latest version of the polyfill which requests orientation permission in iOS.

Here it is what I see with Chrome 86.0.4240.99 and Android 10:

Here is what I see with iOS 13.7 and Firefox 28.2 (2470), Chrome 86.0.4240.93, and Safari 13:

Note that orientation updates work in both.

I am happy to help with this if I can get some assistance locating the probelm. I see the fullscreen requests in the build but not sure which dependency they are coming from. Perhaps cardboard-vr-display?

[stalgiag]

I see that this likely relates to PR 45 on cardboard-vr-display.

[stalgiag]

Also likely related to #148 here

[stalgiag]

Just updated to iOS 14.1 to confirm that it does not work here either.