Yes, that is nice and nifty. You can exploit the poor pathfinding in other ways too.
The mobs will try to use the direct way to someone. Knowing this, you can easily block their path in a whole. Get a tank to stand exactly around a corner and get yourself in a position behind him and around the corner. The mobs most of the time won't be able to maneuver around the tank. The only time they can is when they lag past the tank.
(like illustrated in the attachment - stand like this and the pathfinding will start glitching like a gone mad "bunny" on world domination tour

)