We had a similar incident last year - see
this thread. A quick way to verify that something's not quite right is to note that not all the players with rosettes have the same number of common words, according to the scoreboard. There seem to be 26 players with slightly inflated scores on the scoreboard. As far as I can see only the lexigame site is affected. The scores shown on
https://www.chihuahua-puzzle.com/ seem to be all correct.
I never worked out exactly what the problem was last time, but I was able to repair the incorrect scores after the puzzle closed. I'll do that again, and hopefully work out how to prevent similar glitches from reoccurring.
Thanks for letting me know, Stan.