I'm using Firefox with UBO and for quite a while now every YT video stops playing after 45 seconds with an error message. So I made a bookmarklet that opens the

I'm using Firefox with UBO and for quite a while now every YT video stops playing after 45 seconds with an error message. So I made a bookmarklet that opens the embed link instead, which does not error out, but some videos can't be played that way at all. No one else seems to have that specific problem. Am I the only one with this issue?