thanks for bringing it up to general discussion, i've reported it since few days ago, wrote in feedback sub thread, and sadly not many response from players/dev.

anyway, mobs in whole maps now have randomized starting position and the state whether they are patrolling / standing still, it has become like this since the first update of halloween event.
the randomized position can also differ so much in a wide map, e.g. tindirin, underhul, etc.