onRelation vs. onArea
I just reverted some edits where you set onRelation to yes. It's true that these features are often mapped as multipolygons, but for the purpose of wiki documentation, multipolygons count as areas – see the infobox documentation.
Hope you don't mind, and sorry for the somewhat counterintuitive template parameters. Oh, and thank you for your edits – it turns out one of the pages was missing the onArea flag, which I would have never noticed otherwise. :) --Tordanik 20:08, 19 January 2018 (UTC)