3 games in a row at the start of combat, the game crashes. Was playing Chandra against a Teferi deck the first time and a Nahiri deck the second time, and I suspect that they had lined up a beginner's luck or shields up
The third game I had cast molten misstep

This happened on turn 2 for the first 2 games and turn 4 on the third

Makes it hard to play 10 red cards or deal 75 points of damage for challenges