Maven Boss Fight Bug

I was fighting regular Maven and she kept spawning map bosses over and over again, and then after I finally killed them all. It seemed like their hitboxes were still present in the arena. They were invisible, and they were body blocking me all over the arena. It was making Maven freak out too, her attacks were doing a bunch of strange animations I've never seen before, AND I was using Poisonous Concoction of Bouncing, and I was like I couldn't even aim my attack at Maven. I think it was still targeting all the invisible dead bosses on the ground or something?