TJones added a comment.
Somewhat unfortunately, this is the expected behavior. There's a specialized query for Wikidata items that doesn't work with other namespaces. When you include other namespaces, we have to fall back to a less good query that works consistently across namespaces and allows us to merge results from multiple namespaces. That query also allows us to search all namespaces with a single request. In the //Finno-Ugric// case, there aren't any results from other namespaces, but you still get the ranking from the less good query. There are approaches to merging result lists that were scored with different scoring methods, but we haven't seriously investigated doing that for on-wiki search. There is also the expense of running multiple queries before you can merge their results, which can make such queries much more expensive. Reframing the situation (and this is approximately what actually happened from the programmers' point of view), if you limit yourself to default namespaces, we can run a specialized query that uses much better ranking for Wikidata items. TASK DETAIL https://phabricator.wikimedia.org/T349246 EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: TJones Cc: TJones, Aklapper, Nikki, Danny_Benjafield_WMDE, Astuthiodit_1, karapayneWMDE, Invadibot, maantietaja, ItamarWMDE, Akuckartz, Nandana, Lahi, Gq86, GoranSMilovanovic, QZanden, EBjune, LawExplorer, _jensen, rosalieper, Scott_WUaS, Wikidata-bugs, aude, Mbch331
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