Cannot Rename Chocobo

Hi!
Wasn't sure where to post this.
I applied a level boost and MSQ boost to a character, and my chocobo companion's name is just... "Chocobo". I've tried going to the ChocoboKeeper to rename them, but the option does not show up.
Does anyone know how I can change his name? :confused:

You can change in the stable of a house or apartment.
Try it after a restart of the game, the bugs exist, but do not persist, except bug patch.