Ever since the Bloomburrow update, I've had the same problem every time I draft on the mobile app. When I try to click on the sideboard button or on any of the cards I've already drafted, it has no effect. I can scroll down, but then the scroll bar gets stuck at the bottom and I can't scroll up. The card selection part and drafting part works fine, and then once I get to the deckbuilding stage it also works fine.