Also happened to me during mulligan phase:
The opponent was choosing whether to mulligan or not, but made no action. The timer burned down and expired. Then nothing happened. No further timeouts. I could tap around in the match, but was stuck waiting on an absent opponent.
Also happened to me during mulligan phase:
The opponent was choosing whether to mulligan or not, but made no action. The timer burned down and expired. Then nothing happened. No further timeouts. I could tap around in the match, but was stuck waiting on an absent opponent.