Yes. There's all sorts of bugs. The buggiest thing is the queue. Each time they fix a bug it seems other weirdness pops up. Having built a similar queue for the web UI of a music streaming app, I know it can be complicated, but surely it can't be this complicated. For a while it was unusable for me because I like building a queue and reordering the items, and sorting didn't work at all. The queue should be one of the primary things that automated tests and QA should be able to track pretty easily and be treated as first class.
I've harbored a thought which, incidentally, might also be more reliably testable for QA. Rather than rely upon drag-and-drop for reordering queue entries, provide explicit move-up and move-down performing small buttons, one pair per visible queue entry. Of course, drag-and-drop might be considered visually cleaner (no visual affordances) and allow for move-by-several-slots larger motions. Would that the current YT UI actually allow drag-and-drop-between to work as expected.