When you change the assigned emojis on the emoji keys for a POP keys keyboard the key on the representation of the keyboard should update with an image of the assigned emoji key if there is one that the keyboard comes with for that emoji. for example: if i change one of the keys to use the heart emoji, you should change the representation of the keyboard to use the heart keycap so it lines up with physical reality. then use defaults for assigned emojis there are no keycaps for.