Hey there, I don't know if you have fixed this in 0.77, I just found this bug and when I went to report it it turns out you have already updated, but in case you haven't found this, I was doing the saphura dungeon with an ice based build because I thought it was a good idea, but the moment you freeze an enemy, at least in the water dungeon, the enemy sprite just disapears, and now you can only target that enemy for attacks, the enemy is completely impervious to damage and it's still able to attack. I had to run from some bubbles because of this and then got stuck with Ictalus at wich point I recognized the bug, I'm downloading 0.77 as we speak so maybe its already fixed, but just telling so you know that