Molten Vault Boss Room Bug

I don't know how to add images sorry, but I killed the boss in the Molten Vault at the end of his room, and what I believe happened is that his items or body dropped on top of me and I can't move click anything with my mouse. I had no room for the boss item so now it is stuck on my cursor and there is nothing else to do. Portal can't be clicked and exiting to character select doesn't change anything.

I respawned at last checkpoint which did keep the boss item on my cursor, but it was a strange bug.