Doping case and quality

[holesovice]

I tried to run for dewiki the union of: Wikipedia:Qualitätssicherung Badminton

There came up 4 results, apparently not with quality issues. But all 4 are doping cases in badminton.

Zhou Mi (Badminton) Lee Chong Wei Sigit Budiarto Yu Xiaohan

[magnusmanske]

Well right now there are no results for that query, even with depth 10.

But it works for eg England: https://petscan.wmflabs.org/?psid=26806564

So maybe something with the way the Badminton category is used in practice on dewiki?