- (a19) (v4 regression) Fixed water Pets (Squid, Dolphin, Guardian, Cod, Salmon, Tropical Fish, Pufferfish, Tadpole and more) drying out and dying when out of water
- (a19) (v4 regression) Fixed Guardian and Elder Guardian Pets hurting their own owner with their spikes
- (a19) (v4 regression) Fixed Pet Rename menu dropping the name tag upon rename
- (a19) (v4 regression) Fixed Bat Pets not respecting its "stay" command
- (a19) (alpha regression) Fixed the Pet respawn countdown never counting down
- (a19) (alpha regression) Fixed Pets accumulating experience without ever leveling up unless the owner ran /petinfo first
- (a19) (alpha regression) Fixed the Ranged skill level-up message printing internal text instead of the projectile's damage value
- (a19) (alpha regression) Fixed custom-model Pets briefly appearing and then vanishing with an error when called
- (a19) Fixed Pet death messages showing an internal text key (such as "name.custom") instead of the name of whatever killed the Pet
- (a19) Starvation damage from the hunger system is now reported as its own named damage source instead of an unnamed generic one
- (a19) Fixed Rabbit Pets carried over from MyPet 3 losing their fur type (white, black, gold, salt-and-pepper, killer bunny) and reverting to brown
- (a19) Fixed Tropical Fish Pets carried over from MyPet 3 losing their body color, pattern and pattern color, and reverting to a plain white fish
- (a19) Fixed Pets eating food from the owner's hand when they were already full and at full health
