Second.YouTube keeps showing me the same (promoted?) videos on the right-hand bar, so I keep navigating back to the home page to get half-decent recommendations.
I’ve noticed that as well. Also noticed that sometimes I’ll watch a video and if I watch it again the timestamp it resumes at is somewhere near the beginning liked I’d only watched a few seconds. Perhaps a problem with the system that keeps track of how much you’ve watched or not is breaking other things.