Full screen mode does not work on iPadOS 14.6

[nisaDoc]

Describe the bug

In Safari, the full screen mode does not work.
In Chrome, there is the full screen mode button, it is clickable, but however the full screen mode does not show up.
In Firefox, there is no full screen button.

To Reproduce

Steps to reproduce the behavior:

1. Go to 'browser'
2. Try to play the video on full screen mode.

Environment Information

• iPadOS: 14.6
• Paella version: 6.4.3 - build: 17f54e0

None

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