The Api request http://de.wikipedia.org/w/api.php?action=query&generator=categorymembers&gcmtitle=Category:See_in_Europa&gcmnamespace=14&prop=categoryinfo returns
<page pageid="1855081" ns="14" title="Kategorie:Stausee in Europa">
<categoryinfo size="563" pages="562" files="0" subcats="1" />
</page>
but category "Stausee in Europa" has no subcats. Same with [[:de:Kategorie:Vorlage:Babel-Herkunft]].
You easily can see that bug at http://de.wikipedia.org/w/index.php?title=Spezial:Kategorienbaum&target=Stausee+in+Europa+&mode=categories&dotree=Laden or http://de.wikipedia.org/w/index.php?title=Spezial:Kategorienbaum&target=Vorlage%3ABabel-Herkunft&mode=categories&dotree=Laden
1 K (= 1 expected subcategory) mentioned in brakets but no subcats are listed.
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Severity: major
Whiteboard: aklapper-moreinfo