I was playing Brawl on the Android Arena app on my up-to-date Pixel 7. My opponent's commander was Kroxa, and mine was Vivi. Twice when their Kroxa entered the battlefield, its triggered ability to make me discard seemed to freeze and crash the game. I reopened the app in time to resume after the first crash, and the game had evidently chosen to discard a card I wouldn't have picked. The next turn, my opponent recast Kroxa - I think from the command zone? - and its trigger went onto the stack again. When I clicked 'Resolve', the game crashed a second time. I rejoined once more and conceded, expecting another crash the next time Kroxa entered or attacked.