The Black Crow fight got stuck

I was fighting the Black Crow in a lvl 15 map. My minions (mostly skeleton mages) got him nearly dead in the second stage. The Black Crow turned immune to damage and kept attacking me instead of grabbing the bell to fo to the last stage.

Couldn't use portsl to get out. Tried exiting to character screen but was put straight back into the fight when I logged back in. Only managed to leave by grouping with a trade invite and going to their hideout.

Bug reportd as 1,959,732,337 when I entered the map through my portal again, outside of the fight.