Double Rares Not Loading

Recently, I opened a pack with a doubled mythic rare: two Meathook Massacres. I was excited to build a new deck around them, then opened up my deckbuilder to find I only possessed one copy of the card. I spend mythic rares to get two more for the deck.

This morning, this same thing just happened with Minsc and Boo from a Baldur's Gate pack. Two Minsc and Boos were displayed, but only one is in my inventory.