Well just about 6 hours ago there was a Fix in ToT (-> http://bugtracker.warmane.com/issues/12988) ... So it is a work in progress still I guess.
Also this came up in Devlog: March 23, 2015
Shado-Pan Monastery has been scripted and is undergoing internal testing before release on Mists of Pandaria realms. We expect the dungeon to be ready before the weekend.