https://cs.wikipedia.org/wiki/%C5%A0ablona:Mapa_DPI/plyn should render 14 shapes (regions of the Czech Republic). However, only 13 shapes are rendered. The one for the Central Bohemian region is missing.
Both examples use "service": "geoshape", meaning the data source is OSM not Commons, and in OSM two coextensive relations currently correspond to Central Bohemian Region (Q188399), i.e. relation/435515 and relation/442397. The geoshape for Q188399 is visible if you display it alone but only as an outline because due to aforementioned bug a single polygon is built from two relations, so that one relation sort of clears out the area of another relation.