This did not happen to me, I am hearing it third hand. A friend of mine told me that someone he knew told him they were playing Scientific Games Piggy Bankin' (2017 - please see example pic below). The person eliminated all nine pigs and did not get the progressive pick'em round at that point. Instead, a tenth lone pig walked out which could hold 30 coins in it, rather than the usual 60 coin capacity. And, when this 10th pig blew up, the person got the pick'em round.
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