I just solved a puzzle (61137). When I switched on analysis mode, Stockfish (at depth 21) recommended 18...Qxd4 which is wrong. When I executed this move, Stockfish correctly showed a much reduced evaluation for black. I'm a new user, so perhaps I'm misunderstanding something about the UI. In case that it matters, I'm using Chromium on Ubuntu 18.04. Let me know if you want a screenshot or additional information.