Quote Originally Posted by RobbieH View Post
Worse than that, you can't even interact with basic stuff while mounted.
I think at least SE's original intention with this was to stop people crowding around like say a quest npc or npc's who trigger cutscenes while on a mount and force people to get off so at least the NPC can most likely still be interacted with.

The thought of twintania or the Zu mount or the gobbue just eclipsing the npc so you can't even remotely select them conventionally cause people stand on top of them with their mount because" Hur Durr, I'm so funneh!"
^
granted some people still do this anyway to troll by just sitting on top of an npc with the mount.

Though you can ultimately get around all that with tab targeting (not that it always likes to work.)