BUG] Elite enemy left arena during Delirium encounter – cannot progress (Ref #: 2'256857704)

Description:
During a Delirium encounter in Path of Exile 2 Beta, I encountered a bug where the Elite enemy left the designated arena mid-fight. This made it impossible to finish the encounter, as the enemy moved to an area I couldn’t access.

Reproduction Steps:

Enter a Delirium encounter.


Fight through the waves.


An Elite enemy spawns.


The Elite walks/flees into another room beyond the fog wall.


Player is unable to follow or attack the enemy.


Encounter becomes stuck.


Error Reference: 2'256857704



Expected Behavior:
Elite enemies should remain within the fight area and not move out of bounds or to other rooms during encounters.