In the middle of selecting a mana type when tapping the twitching doll card, my opponent conceded. I then selected a mana after their avatar exploded and the game state froze, keeping me from doing anything. This soft locked me and I had to forcibly close the game. The gear in the top right corner was gone, all the effects of the play field like sound effects of cards when hovering over them or clicking elements on the field still gave feed back, but no progression could happen and I was stuck until I closed the window from my task bar.