Super weird that Mexico is so different on the money/noMoney wallet test. It's the only country that has its return rate flipped. i.e. wallets containing money

Super weird that Mexico is so different on the money/noMoney wallet test. It's the only country that has its return rate flipped. i.e. wallets containing money are LESS likely to be returned than wallets not containing money. Basically every single other country had it the other way around. I wonder why that is. Is there a cultural aspect to it? Also kind of bummed that Japan and Korea are not on the list, would have been interesting to compare.