I had a character going through the rafters quest and another person ported to me to join the battle with me. While I was reading over the dialogue, the other person joined the battle and then I was immediately pulled into the battle after finishing the dialogue. Weirdly, there were two battles overlapping, one being with me and the other being with the other person. The other person finished their battle first and was stuck in combat with no one to attack because she was technically in the same battle even though it was totally seperate (turns and profiles that appear). She was not able to join the battle again after fleeing.