Green screen when watching videos


I have a probem of green screen (with vertical lines) when watching videos on iodé Browser (also with Firefox Android). The video starts and turns green after a few seconds but continues to run (audio continues). Sometimes the video comes back, sometimes it stays green.

I have a Fairphone3 with iodéOS 4.8 (but the problem already existed before last update).

Am I the only one facing this issue? I am wondering if this could be an hardware problem with my Fairphone or if it could be solved with the OS?