@saphir This is amazing! Never knew about this. Thanks for letting me know! It worked and yes I agree with the downside that we do need to press Space instead of Tab.
@dcscotland I tried downloading the normal Opera and this glitch doesn't happend over there, I believe is this new uptade they released, before that my youtube didn't do this. It's been 8 days since it first happend, and so far it's still happening. Is almost as if the browser is not recognizing my youtube settings, in which is set to night mode and autoplay disabled.