1. Go to Special:NewPagesFeed page and select filter combination that will give you 0 results.
2. After o results are displayed click to on 'Set filters' link to change filters.

The filter drop down menu opens up but ''Set filters' button will be out of the viewport.
The screenshot full-screen browser window:

Note: the page is scrollable in Firefox, so the 'Set filters' button is just below the fold