Auto Tap Bug
I was casting Astral wingspan and I had two creatures to convoke it, a treasure and mana so I didn't have to tap the creature it was targeting. This was a draft game. I targeted Kroxa and Kunaros and was planning on swinging with them in the air as it couldn't be blocked and I would have gained 8 life. Instead auto tap decided to tap Kroxa a Kunaros and not use the treasure. It was originally set to do that and milliseconds before I clicked confirm it said auto tap solution changed and tapped kroxa ans kunaros for convoke causing me to not gain life and tap all my creatures leaving me wide open and I lost the game as a result. This was a draft game so it was very upsetting to lose this way when I was otherwise guaranteed to win with a flying 8/6 menace vigilance lifelink