overlaping character models on 2 seat mounts

[vicezx]

WoW Freakz item link: any 2 seat mount
Bug description: on any third party viewer, when someone gets into a 2 seat mount, instead of showing the person taking the second seat/rider seat etc, it will just show that character model inside the mount, only the person taking the second seat is the one able to see itself taking it.
Proof: the first pic shows how it looks when you are the one taking the second seat on a 2 seat mount, it looks normal, however the other 2 shows how does it look when a third party is taking the second seat, using druid travel form and vial of the sands drake for these proofs