What is happening:
It appears that some NPCs exist twice at the very same spot.
The ones I discovered are Odds 'n' Ends next to Midway Village and Stool Pigeon at Cantermore's castle.
It is likely that there are more.
What should be happening:
There should be only a single NPC/pony/entity/model instead of two.
Steps to reproduce the issue:
Go to the NPC in question, observe them and you'll see the other one when one of them performs the idle animation.
Game client version:
0.1.9, 0.1.10 (current)
Windows 10 Home 64-bit (10.0, Build 16299)
Crash logs or exceptions generated:
Odds 'n' Ends, The Heartlands, next to Midway Village
Stool Pigeon, Cantermore, Cantermore Castle