The Hidden Forest

Not sure if this is a known issue or not, but I can attest to the fact that the Bst buff "Spirit of Irionu" which adds a 500dd proc fails to trigger if zoned after the buff is cast. The buff must be recast when you reach the zone you will be fighting in. A minor inconvenience, but I'm not even sure if the other buffs actually work in this fashion as well (haven't done any parses to confirm the other buffs). Due to this, I tend to keep all my pet buffs on my spell list at all times and rebuff them all each time I zone. Is this an issue other pet classes have as well?

Don't have a bst but that's clearlynot happening with necro or mage pet, nor with shaman's. But those are not buffs that will trigger a proc like yours.
Shaman's gladiator or spirit of lion line keeps triggering after zoning too as far as I know, though since the duration is not very long, I rebuff it quite often anyway.
I will check tomorrow by casting it on a pet and zone, but I'm pretty sure it works.

Can't help to test on a bst sorry.
Is the buff still appears in the pet's buff window ?

Yup, all buffs still appear in the pet window, and timer ticks correctly and everything. It just fails to trigger the proc. Once rebuffed, it works perfectly. Just a little nuisance.

Also a little curious is the fact that auras stick with pets after zoning, and actually do correctly apply their effects (this should not be happening, but I *think* the devs are aware of it). Again, not huge, but can probably be imbalanced at lower levels when someone's pet in crushbone is buffed with a raid aura Shrug.