Uga Buga learns no new attacks?

Be Mine Beginner
Sep 15, 2009
Ok, so can someone tell me why uga buga learns no new attacks when i promote him. It really gets on my nerves, wagyu sanjuro has the same problem, will this ever be fixed?

Be Mine Beginner
Aug 13, 2010
This also holds true for Sergeant Shepherd, Fin Dorsal (When you witness him as an enemy he does have different attacks, the Companion Fin does not), Malik, and I am sure, many other Crowns Shop Companions.