Sooooo I was just looking at the cards I have accumulated and never sold, and decided to click the show all button. To display as many cards on the screen as possible(it didn't fit) I started putting the cards in my deck I only have one of, so a new stack could show, while not filling up the deck too much. Then I noticed that the bottom-right card, the last one, always had a 1 next to it. Even if you have more. This is purely visual, I could click the card for as many times as I had it and it would go to the next.
I have screenies ready on my desktop, one showing the last card is ONE ice shield, then me having two ice shields in my deck and the last card being ONE purify, and next me with two ice shields and three purifies. Dunno how to post'em though.