A thing with no category

This item has no category, so the Uses page has nowhere to file it — and files it under Other rather than leaving it out.

That is the same rule the Library follows for a book with an unrecognised status, and the Journey follows for a station with no dates. Every collection renderer here tolerates a child it did not expect, because the alternative is a page type you cannot safely convert to: change a page's type once and half its children disappear from the site while remaining in the tree, which is the worst of both.

Give it a category from the editor and it moves section, live, for everyone reading the page.