Hunter pets won't despawn at range

• Can confirm that hunter pets tends ignore collision with the boat. If you step on the boat they will just walk and fall through. The same happens if you are already on the boat and use the "Call pet" spell.
• In my tests when me and the pet we got to far apart, sometimes it got dismissed but took some time and sometimes it didn't
• The same problem happens with zepellins

This is probably to do with the pet movement doing a vmaps check and seeing that there is nothing there because its a dynamic moving object it falls through. We need a flag of some sort indicating to the pet that there on a dynamic object and to ignore vmaps and just use the players z-axis.

Well, described issue is sitll exists (look at vid_1 and vid_2: Fluying a zeppelin. Pet not aware of zeppelin existance and trying to follow my xy on tyhe ground level. After travelling pet is not despawned (actually it spawned at the beginning of the tirisfal map in the ocean according to minimap and idk what' next happened with him (her, actually). As a workaround player could dismiss the pet and then call him/her again. 

But this issue is not about the topic. 
What can I say about pet despawn at range during travelling? I encountered two types of behaviour (both could be reprodused better when you are fast enough (aka using mount)). The pet will follow you with the nearly same speed. If you aggro a mob and continue running:

1. Pet will make a pair-or-so attacks to the mob then continues following a player, catching him up pretty fast.

2. Pet will stuck in combat and if you run quite far it will despawn. 

Idk how it should be, but variant 2 proofs TS wrong. 

In my view, the described issue not matching the title. Described issue is confirmed.

Topic statement maybe another issue according to my thoughts and experience of travelling alongside pet simply through the map, but seems not.