Stuck in Expedition Boss Arena

Fighting a T2 Expedition boss with a logbook and I somehow killed him first phase (blood Mage bleeder). He dropped the knowledge book and loot, without a 2nd phase but now I can't get out of the arena (portals disabled in boss arenas). Got on a different character, opened a new map, other character still stuck. Logged out and back in, same result. Advice?

same issue , what next time and please refund ticket.
i did try all still not working

same, killed im instantly in p1 and can't walk out of arena, can't tp etc

Join someone in LFG to to them and leave.