Playing videos in the background

One of the main reasons I switched to Brave is the possibility to listen to videos in YouTube and other video sites while looking at other tabs or apps or just switch off the display to save battery.
I recently noticed that this doesn’t work with a number of streaming sites.

Example of such sites;

(but on the same site the audio only streaming

does work in the background)

https://www.radioclassique.fr/radio/direct/

Description of the issue:
Background playing of streaming videos does not work on some sites

How can this issue be reproduced?

  1. In Brave settings activate the setting "play videos in the background
  2. Open one of the URLs mentioned above and play the embedded video stream
  3. Do any of the following: Change tabs / Switch display off / go to home screen / open another app

Expected result:
Sound of the video should continue playing uninterrupted

Brave Version( check About Brave):
1.15.73

Mobile Device details
Samsung S7 / Android 8.0.0