Arena blocks exit

Another PS5 special. In one of the maps in endgame, I was able to access an Arena without needing to click X to enter Arena as a separate area and defeated the map boss. Now however the Arena popped up and I'm unable to leave the area even after I have town portaled. I won't be able to finish this map as there are other bosses.

If this happens again, a work around is return to the character selection screen and then reselect your character. You can then return to the map from your last portal and continue on. Just don't create a portal in the Arena, then it's lost.