Full Screen does not work in Desktop Site

[jhreis]

Description:

When using a Desktop site / UA, full screen videos do not work.

Steps to Reproduce

1. Go to website with a video (e.g. youtube)
2. Request desktop site
3. Full screen unavailable

Actual result:
No full screen

Expected result:
Full screen

Reproduces how often: [Easily reproduced, Intermittent Issue]
100%

Brave Version:

Device details:

Website problems only:

• did you check with Brave Shields down?
• did you check in Safari/Firefox (WkWebView-based browsers)?

Additional Information

[srirambv]

• Verification passed on iPhone XR with iOS 13. 1 beta 2 running 1.12(19.09.07.08)
  https://youtu.be/OI2DwYGJRug
• Verification PASSED on iPad Air 3rd Generation iOS 13.1 running 1.12 (19.09.10.18)
• Verification passed on iPhone 7+ with iOS 12.4.1 running 1.12(19.09.13.06)