The Viridian Wildwood - Stuck inside room [Video included]

Hi,

I was running a T5 Viridian Wildwood map with the "shrouded in darkness" modifier.

After killing a unique monster and using the Crystalline Core of Knowledge that it dropped, an invisible wall surrounded me. Mobs could attack me from outside the wall, but couldn't get to them. When I tried breaching the wall, the movement speed reduced, and was teleported to another room. This room has a checkpoint, but all my other checkpoints from around the map were removed as well.

Video: https://i.imgur.com/VCW700C.mp4

Many thanks.