Quote Originally Posted by Spetsnaz View Post
I've wondered for some time why this hasn't been addressed. Want to grind fates while waiting for a dungeon to pop? Better be alone. Accidentally summon Chocobo while in que? Just remove us from duty finder with no notice.
Largely because the current implementation of the chocobos literally counts them and treats them as a full fledged party member.

They've said they're working on it, but it's something that actually requires a lot more work to change than you'd expect because it involves tinkering with some extremely core sections of how the Duty Finder, parties, companions, etc. all work.