[bug?/exploit) mobs get stuck in fissure map

There’s one map in the new ‘visions of enmity’ fissure levels where the player enters the fissure level in a narrow path which then widens after about 50-100 yrds.

When the player aggroes large mobs (spawned in the wider area) , then retreats towards the level entrance and the mobes pursue the player, large mobs consistently get stuck where the path narrows… long before the level entrance. This can be exploited with a ranged class by staying near the entrance, out of reach of the stuck mobs, and just shoot them with reduced risk to self.

Intended?

/edit name of the map is ‘Destruction’s Wake’