Wiki index livedata does not allow multi author filtering from column header

It used to be possible to directly use a multi-author filters in LiveTables such as we have in the page index live table. The wiki index live table was working like that and allowed to directly filter from the column header with multiple authors. Apparently it was partly lost when migrating to live data: the feature is still available but through the filter widget only which makes it a bit hidden for standard users.