After today's downtime, MTGO has some interface problems.

I drafted and both during the draft and deck building, it was hard to move a card into an open slot. Even worse than that, is spending the mana when you have several colors on your pool. I used to click on the mana symbols to spend them but now that doesn't work and you have to go to the text box where you click ok and yes/no to spend it. Very annoying.