videos won't play

[M1Aston]

I came across another problem while referrers are off.
https://www.npostart.nl/live?npo_cc=na&npo_cc_skip_wall=1&npo_rnd=

VIdeos won't play while the extension is anabled, disabled everything is fine.

[M-Reimer]

This seems to be the first case of this Mozilla bug that doesn't happen just to me:

https://bugzilla.mozilla.org/show_bug.cgi?id=1723283

I have messages like "Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at" in the developer console, so it is very likely that I don't have any way to fix this on my own. The above Mozilla bug needs to be fixed first.