for what i've seen mob trophies are now ITEMTYPE_COLLECTIBLE, that was expected although i can't find the function returning the values COLLECTIBLE_ITEM_TYPE_TROPHY/NONE/FISH as all functions using the word collectible seem to refer to the crown store.

but it doesn't really matter because fishes appear to not be bankable anymore (so will be the trophies but guess what, i wont lose my time checking that, i got some fishing to do on live).
I really hope this isn't intended.