Yes, that's weird. I also had a 5k drop (which is not much, so I didn't think about it). But also in the german Bundesliga the reigning champion went up in the World rankings by 20 which should positively affect his merchandise - but it dropped by 10k. So maybe there is still a minor bug there ..
Winner: 1x Consolation Tournament, 3x Bronze Medal (U21), 2x Goldene Ananas, 1x Goldene Himbeere, 2x Goldener Erdapfel