Steps to reproduce
1. Create a best of 3 deck with a sideboard.
2. Attempt to start a best of 1 game with it.
Actual Results: It doesn't show up as an available deck.
Expected Results: It should show up as an available deck. (In game, the sideboard that shows up should be the seven cards in the best of 1 portion of the sideboard.)

Note: This problem shows up for most best of 3 decks, but some of them still work correctly. I've attached one of the decks that has this problem. It's an alchemy best of 3 deck.

Platform: PC