This is actually not a bug, it is working as intended. It is not optimal, but to save the names of all of your pets (read: all of everyone’s pets) would require another large name database that ANet did not create. Currently the pet name feature saves the name in the slot, not the pet, so changing out the pet type resets the slot name.
Perhaps someday they will change this, but it is not a bug.
Are you certain, because surely if they can record the pet names of the 4 select pets, that same field in the database could simply contain a long string (seperated by whatever symbol) of names. E.g. “Kitty, Doggie, Spidery, Juvenile pig”, then call the nth position of the list for the nth pet ingame.
The same thing happened at Vizier’s Tower in Straits of Devestation. All the way a guildmember of mine got both chests without issue.
Today I solved the jump puzzle “Conundrum Cubed” In Mount Maelstrom for the first time. When I got the achievement however, I noticed the chest was already open and unusable. To my knowledge, this is not working as intended.
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