Hi,
I noticed a rather annoying bug with the inventory of the hatchling. In case you have the pet equipped with items, have some food in there, and the server restarts, the items get destroyed and not moved back to the player's inventory.
I have no further information regarding this because there is no error. I tried several times, same result. if the player doesn't unsummon the pet, and the server issues a restart, the items carried by the pet are destroyed.