Hi,
I sent a bug report but maybe if someone from Blizzard sees this post it will be more efficient. The mount Ol’ Mole Rufus is currently bugged: If the terrain is not flat (for instance stairs), the mount will remain in its “flat-terrain” position, so basically its face constantly enters into stairs etc… This is the same bug as the first model of Taivan had. Hope it is fixed soon, it is a cute mount!