I'm currently questing on a couple of characters and both are exhibiting the same problem, mounted on a flying mount moving from location to location and failing to dismount to collect items. Earlier I was experiencing a similar problem where it was failing to dismount and pull mobs. It was using the green hippogriff as if it were a ground-based mount. View attachment 23392 2016-07-28 10.36.txt
Dismounting is a Problem since the new patch, for me he does most time not dismount, not for ores ( just ingame message your mounted ) not alltime but most times for objectives and also sometimes on fighting that he not dismount.
Mounting / dismounting bot behavior while lvling triggers players attention to report. it mounts for 2 -3 steps away from qst giver ( target) then dismount.