Low HP mobs pathing into ceiling in caves

[flapjacks1337]

Found a low lvl rare mob named Felweaver Scornn in Skull rock cave outside of Orgrimmar (near the Great Sea coast). When it reached low HP it pathed into the ceiling and never came back down. I died to its Voidwalker pet, waited 30 seconds on the floor to see if it would reset, it never did. I took a rez sickness and went about my way.