I’m not sure if this is a bug or not, but I’ve noticed when leveling in different expansion campaigns sometimes you have a list of 8-10 dungeons to choose from then after some time or levels gained it reduces down to 1 or 2 maximum, even within the random dungeon pool.
Is there a reason for this?, the dungeons say level 10-61.
For example right now in mists of pandaria i can only queue for jade temple separately, and random dungeon pool options are only jade temple, over and over.