Today I got 4 notifications on mediawiki.org (I saw them first as 4 cross-wiki notifications on pl.wikipedia.org).
Screenshot of the Notifications page:
but there is an additional entry Manual:How to debug/de with a count of one, when clicked says "There are no notifications matching this criteria".
Where does this dud notification comes from?
(I am pretty sure it's a dupe but I had difficulty doing through the Notifications board).