I can't seem to be able to replicate this issue. Is it only the second card? Which browser and operating system are you using?
Actually, same problem (Firefox, Windows). Bought a second card, first card keeps flipping, second is just an empty space.
Also: what is the deck codex? It keeps alternating between being blank and having the eight through ace of diamonds.
The issue was apparently due to the card codex. Now cards appear properly :)