Video element switching to full-screen mode glitch

Related app/team name (not a must if you want to keep it private):

Issue Description:
With a default html5 video element, when switching to fullscreen mode a visual glitch occurs - as the app view disappears and only after a noticeable amount of time the full screen appears.
Happens in our app by blinking the entire UI. When reproduced in Overwolf’s browser, the behaviour is a bit different, but yet glitching at the same timing.

Can you reproduce it (exact steps to reproduce):
Quick reproduce method 1:
1.1. browse to via Overwolf browser
1.2. click on the full-screen control.

Quick reproduce method 2:
2.1. create an app with the following content in the HTML file:

 <!DOCTYPE html> 
<video width="400" controls>
  <source src="" type="video/mp4">

2.2. run the app and click on the full-screen control.

Impact for my app: (Minor)
Cannot say the impact is major, but it is a noticeable issue. We are focused on video consumption and this behaviour is not aligned with the acceptable standards in the industry (it’s annoying)

Do you currently have a workaround?

Attached at

  1. experience in Fuze app: video + frame by frame screenshots
  2. experience via Overwolf browser (repro steps): video + frame by frame screenshots


We added the bug to our backlog. Currently, there is no ETA, but I will update you here once the fix is released.