When summoning an armorstand with a head with no name (command below)
/summon ArmorStand ~ ~1 ~ {CustomNameVisible:1,NoBasePlate:1,CustomName:Toy Bonnie,ShowArms:1,Equipment:[{},{},{},{},{id:397,Damage:3,tag:{SkullOwner:""}}]}
Makes entity models teleport to you, disappear, and do random things.
YouTube Video link : http://youtu.be/9hQGd66ay0E
Thank you for your report.
However, your ticket has been resolved as a duplicate.
This issue has been linked to the original bugreport: MC-73731. You can find or add further information on that report.
Please search before reporting any bugs, as it's likely that one exists already.