Boss bug in Expedition — cannot leave area

I recently defeated a boss in Expedition, but it didn’t transition to its second phase and simply died. Now I’m stuck in the boss fight and cannot leave the area, even though the boss is gone.
Could you please help me resolve this or let me know if there’s a way to reset the instance?
Thank you for your time.

Teleporting to another player solved the issue. I was able to leave the area afterwards.