Pathing here is super unclassic.

[savagefilip]

There's a lot of spots that come to mind, but a few stand out as particularly frustrating areas:

Halls of Testing; If you are pulling a wurm from distance there is a chance that the wurm will start glitching out and swim through the ceilings and floors before finally jumping on top of you. Really difficult to time FD when you can't see the mob you are pulling.

Entropy Serpents at the DN rat tunnel entrance; A single entropy serpent will warp through the ceiling of the Vilefang room to the entrance of the rat tunnel in DN, then will path all the way down to the pool before repeating the sequence again. This has messed my Vilefang pulls a number of times. I aggro all the entropy serpents and start running them out of the tunnel, just to get blinded by the bugged snek.

Kael Drakkael; There are 3 or more spots where pathing is impossible to control: Vindi bridge, ramp to see-invis and ramp to 4-way from WL (might be others, these are the ones that are known to me). Pulling anything from statue to gkrean to vindi is very challenging when the mob of interest is bugged but a few other mobs get through the spot and start smashing you. If you start running away from certain death, the target mob cannot calculate a path to you and will remain bugged.