Broken Stockfish

So I played a three checks game from the lobby (totally legit, can be found in a search), and after the game ended I requested a server analysis. The local engine shows a knight move, but the analysis says that that move is an inaccuracy, as shown in the image, but why?  

yea sometimes fishy trippy

yea very trippy instead of taking the bishop qb4+ check is better my analysis say that !!