There's some bugs on some equipments.
When you're using the Mushroomblade, it said that it'll do inflation-type damage, which I assume that's when using the basic attack. But when trying this on the water-type enemies that're weak to inflation-type attacks, it said "RESIST!", meaning it's still doing physical-type damage. The same goes to the Boulderfist Dagger, which it suppose to deal earth-type damage.
When using the move "Gaseous Breath", given by the Dragon's Crown equipment, it said that it'll do inflation-type damage, but when using it on both enemies that're weak or resistant to it, I don't see "WEAKNESS!" nor "RESIST!", meaning it's dealing untype damage.