Necro Pet Bugs
Necromage Pets will cast Conduit, and yet it doesn't function for them. The circle of skull candles will appear, but none of their single target Necro spells will chain off of it. So the pet just ends up wasting Mana.
While technically not a "bug", the way some Necro capable pets cast Corpse Skin needs to be re-worked. Pets that deal a high % of Physical or Cold melee damage really shouldn't cast Corpse Skin, because it significantly lowers their melee damage output. For example, if your 100% Physical Damage necro pet casts Corpse Skin on an 80% Physical Resist target, their Physical Resist goes up to 90, and suddenly your pet is dealing half the melee damage it was before Corpse Skin.
Pets whose melee damage output negatively impacted by casting Corpse Skin: Dire Wolf, Dread Warhorse, Predator Hellcat, Shadow Wyrm, Tsuki Wolf.
Pets whose melee damage output is buffed by casting Corpse Skin: Dread Spider, Hell Hound, Hellcat (small), Nightmare, Grizzled Mare.
Vampire Bats are listed as "Necromantic" creatures by https://uo.com/wiki/ultima-online-wiki/skills/animal-taming/animal-training/, yet are not tameable.
I'd like to see Necro pets cast Curse Weapon more often. This would help make Necromancy a tank option for pets, as Chiv is the best Damage Dealer option for pets.