Lephresearch center pathfinding

Fixed. The monsters in front of the Lepharist Research Center treated a large part of the square before the entrance as if they could not walk there, so they ran around it, jumped back when pulled, and some gave up and were sent home. The square is open to them again, and the Gatekeeper Kirrin now comes straight at you. The same mistake affected open ground next to a few other entrances and doors, and is gone there too. Live after the next server update.