Unless I'm much mistaken, this is new. Is it a bug or a feature? I don't see it in the patch notes.
I hope it's a feature, because it reduces pet clutter in cities. But if it is a feature, can it please be added to writ Quartermaster chests too? As it stands, there's nothing to stop some wag from resummoning their pets between crafting station and Quartermaster chests, which is where they cause the most trouble, in my experience...