I was playing Isaac (Non-WoTL, for a little change of pace) and I was fighting Scollex and I had The Pony. When Scollex's tail was up out of the ground, I charged at him with the white pony while he was just about to go into the ground. After that, the animation of Scollex's Tail going back into the ground kept looping, and I could only rarely damage him. After about 10 minutes of this, I was forced to restart the game.
Is this a new glitch? If there is a post about this please notify me, that would be greatly appreciated. I don't know if this happens in WoTL but if anyone has ever had similar expirences please let me know. Bye.