Grimhaven map - locked out of map boss arena

Hello,

In the map Grimhaven, I was locked out of the map boss area. I moved towards the boss, the boss spawn animation began, and I moved away, and the wall for the boss area spawned. The wall did not allow me to enter the room and kill the boss.

On this map, the 'Enter Arena' button on the wall needs to be added.

Bug report reference number: 3,124,480,241

Thank you!

I can reproduce this issue:

https://www.reddit.com/r/PathOfExile2/comments/1i39sli/grimhaven_bug_boss_inaccessible/

This just happened to me also.

I need to change my persistant skills for the boss so I backed up to do that. Could not go back due to this.

This also just happened to me. I just barely crossed the threshold to the boss arena and exited to go kill one final rare monster. When I returned to the boss arena, I was locked out and the "Enter Arena" option was unavailable.

Just had it happen as well.
Used a checkpoint to get to the boss that I had missed and while the loading screen was going the boss spawned and locked me out.