While playing spooky deck, I got the chocolate dye roll of a 5, and played a few hands intentionally to rid my deck of some unwanted cards. However when drawing a new hand I found that the card was still there, as in taking up hand space. I could not select this card and could not discard it.
The deck doesn't show the card in its card list, but the deck says 48/47, as the extra ghost card is still in it. The game does not crash, and otherwise runs stable with this ghost card in your deck. Upon a reload of the game the card reappears in your card list, but the deck doesn't update back to 48/48.