A very minor thing, more a dynamics problem then a bug.
When you get enough cards, and you are in 'your deck' or the bazaar, the cards at the end will go off the edge of the screen. You can still get to them under their respective element categories just fine, so it does not hinder game-play, but I am rather fond of having them all laying out there so that I can examine everything at once and choose from among them.
I recommend setting it to make use of a scrollbar at the bottom once this happens, to scroll through to the end of the list.