When sorting by cost in my decks cards with a cost of 10 are sorted right after 1's. It's like it's sorting by the string "1", "10", "11", "12", "13"..."2", "20",..."3"....etc instead of by the value. I was wondering if is an issue across the board and if there was the possibility of it being fixed as I keep my cards in cost order.

Yep, looks like a bug. Thanks for reporting, will check.