I just got blocked by YouTube on LibreWolf today but not Firefox. The ad blocking related extensions I have are uBlock Origin, Privacy Badger and Malwarebytes. After 15 minutes of resetting uBlock Origin settings, I’ve decided to try turning them off one by one, I found that it was Malwarebytes that triggered it. Even when I whitelisted Youtube but it didn’t work, I have to disable the extension to fix it. It looks like it isn’t YouTube don’t want you using adblocks, it’s YouTube don’t want you to block scams and malwares.

Just use newpipe or freetube

For some reason, I got this popup but I didnt care which then blocked my player but I tried several different adblockers simultaneously which made the ads not play but there was a black screen for 5 seconds or so when the ad should’ve played but then I installed adguard, which after that no matter what I did on youtube, didn’t get any ad anywhere or the popup, with the ad blockers on or off .

Using Vivialdi btw

I found I could visaully block the pop up and use keyboard controls to still play a video. It did break navigating the page though because while I couldn’t see it popup it was still there.