PetStableSpecCache

At the time of writing this (19-8-2018), GetStablePetInfo returns an empty string for the talent return value. This makes the default UI show "Name -" instead of "Name – Specialization" in the PetStable. This addon caches the pet family and corresponding talent spec whenever the UNIT_PET event fires.

To use it, just summon each pet once to cache its specialization. No configuration required.