I was just doing Veteran Castle Thorn (non Hardmode) when Lady Thorn bugged out with zero health remaining and stayed frozen in the air. The entire group was stuck in combat the whole time. We finally got her to reset by all of us using some ravage health potions and dying. After she reset we were able to successfully complete the dungeon.

I cropped the screenshot to hide the other players' names and the chat box.


I don't have any other information or any idea how/why it happened, nor do I have a video recording because I usually don't have a reason to record my gameplay... If you need the other player names that were in the group then I do have those in the original screenshot.

Edit: This was on PC/NA