Video screen is black when VP9 is blocked. How can I fix this? Everything was working fine until recently.

It broke youtube for me and today i finally figured out this addon was the reason

On a lot of videos if I block h264 and AV1 the video won't play and it says your browser cant play this video. Add an option to "Activate VP9 when it's available".

Tested on 08 May 2022, doesn't change youtube codec - I disabled avc but youtube doesn't care.

Does't work