Cosmetic Item Issue

I have quite a few cosmetics that i cannot seem to be able to use to acquire the item listed for transmog on other pieces of equipment. My main example is the “Night Elf Shield”. i would like to state that i got this item on my Night Elf Druid, and since Druids by default cannot use shields, the game would not let me acquire said cosmetic. i decided to transfer the item to a character who could use shields and tried to use the cosemtic item, with no luck. i opened a support ticket about this issue and the GM that contacted me said that i should report a bug here.

I would also like to add that i personally think that all cosmetic items you acquire, regarless of if the character you play on can actually use the cosmetic in question, should be able to be used because the item itself ties to your account regardless.