Battalyst behavior and clipping

[Ndoop]

During the fight with the Battalyst in the Second Dream mission where the Stalker destroys the void portal, the Battalyst failed to path and attack properly. During times when it would use its whirlwind attack, it would instead stand still or wander randomly. The missiles, aura, and disco ball attacks all worked. Instead of pathing within the main boss chamber, it would occasionally wander into the previous icy room. After entering the icy room, it eventually walked up the hill and got stuck on the pillar-like icicle on the side of the room that would be the left while facing the main boss room. After hitting it for a few minutes with a melee weapon, it seemed to clip through the wall and ended up somewhere past the portal, with the red indicator showing it about 80m from the closest point I could get to the portal without being pushed back. Abandoning the mission and reloading it fixed the problem. Played using frost prime and opened the fight with several uses of the "1" ability for chain freezing. Did not attempt to reproduce this bug.