My initial assumption is that it's not shown correctly for a player who comes on the field as a sub and then scores a penalty - that was the case for Florian Wirtz above, and the same for Ferran:
But I'm not 100% sure, so you'd better double check.
Also the situation with Berardi that I mentioned above is different: he was playing as a starter, missed ONE penalty in the match (which was his FIRST missed penalty for sure, because it was the first game of the season), and after the match got this in his stats: