Steps to reproduce: I can't reproduce this in Safari, I have these plugins(all for the Firefox browser) active:
YouTube works fine and the plugins behave correctly but at some point, seemingly randomly, YouTube videos stop playing. They load but I can't unpause them, it looks like they get paused automatically as soon as I click the play button. I allowed all auto-play for every website but that didn't help.
The only solution I have at the moment is to disable all of the extensions, restart the browser, and reactivate the extensions, until the bug presents itself again.
Expected behavior: YouTube videos should play normally
Orion, OS version; hardware type: Orion Version 0.99.119-beta (WebKit 615.1.1), macOS 12.5.1, MacBook Pro 16" M1 Pro