As described in https://x.com/avi_eisen/status/2056348041292988650, Polymarket recently incorrectly resolved a market, in part due to a bug on their website.

Will users who owned the correct answer, Yes, at the time of market resolution be paid out in full?

If partial refunds are given, e.g. if people are paid their cost but not winnings, this will resolve at 50/50.