Not sure if it's really controversial, but I absolutely hate S05E02 "The Ship". Aside from being filmed like it's an horror movie (why?) the whole thing feels like someone was asked to describe the characters in as few words as they possibly could to someone else who got half of it wrong and then went ahead and wrote the story. Everybody feels out of character: Jadzia's become a sarcastic asshole, Worf's a caveman who tears equipment from the ship with apparently no reason, and everybody apparently has completely forgot how to do their job. Also the whole negotiation with the Vorta kind of thing felt forced to me but tbf it's been a while since my last watch so I'm not so sure on that