Problem:
Have two decks that use the same assets ie:
Deck 1:
Front: front.jpg
(Unique Backs checked)
Back: back.jpg
Deck 2:
Front: back.jpg
(Unique Backs checked)
Front: front.jpg
If both decks are on the table, and one is removed (all cards put into a bag), the other decks image unloads leaving you with white cards.
This seems to be related to reference counting and not considering that the same image might get used on the front and the back of a deck.