Pages in the "Topic" namespace (used by Flow, as far as I can tell) are showing up in Special:UnconnectedPages. These are discussion pages and should therefore be excluded.
e.g. Look for pages starting with "Tema:" on https://ca.wikipedia.org/wiki/Special:UnconnectedPages or "Sujet:" on https://fr.wikipedia.org/wiki/Special:UnconnectedPages (might need to go through a couple of pages to find one)