I was resolving my breach LED combo in arena powered cube and had no mana floating, 1 card in graveyard, and an underworld breach in play. The arena client, after resolving the LED, passed priority into my end step without allowing me to use my LED to ***** it and discard my hand. I lost my game to this "bug". Why would I want to pass priority into my end step with an underworld breach and led in play? I paid 20 bucks to get in to this thing man. This really sucks.