With new feature - watching of category addition/removal (T9148) there is one small bug:
Editing of template witch category change (or moving template) gthere is message in RC eg:
23.04 Kategorie:Infoboxy budov . . (0) . . Urbanecm (diskuse | příspěvky | zablokovat) (Stránka Šablona:Infobox - muzeum a 274 dalších zařazeno do kategorie) (rozdíl | historie)
This message says: Template Foo and 274 others added to category
But only one template was recategorised in <noinclude> part, pages using this template were not recategorised