Phase Spider "Fade" on pets

[Boilon]

I have been soloing off and on at the zone-in for a while using my epic mage pet in Dragon Necropolis, and the Fade or Shadow Step mechanic on the spiders on my pet is VERY wonky to say the least. Sometimes he gets ported below the world in rare cases, other times he goes inside the furthest wall and takes like almost a minute for him to come running back with the spider.

This is completely different from when I get hit with the same proc from the spider and it just moves me a bit from where I am. This seems to work really really wrong in my opinion on the pets, unless someone can claim to me this is normal? I don't find under the world or inside walls to be normal

Not sure if this was supposed to be here or in the mob pathing (it's not really pathing?)