The issue is present in wmf.7, wmf.8, and betalabs.
- On the RC page with the New filters, select some filters and select Namespace filters. Exclude that Namespace filter.
- The label "Excluded" will be displayed for the excluded Namespace(s) (correct). Also it will be displayed for the selected filter in the Filter drop-down menu.
3.Remove the excluded Namespace filter - the selected filters still display 'Excluded' label.
Btw, the result set won't be affected, i.e. the results fetched by the selected filter won't be excluded.
Reloading the page won't help - "Excluded" will be added to any subsequent filter selection.