The popup for filter settings can can go partially inaccessible off screen, when the list of matching articles is short or empty.
Steps to reproduce:
# Go to [[ https://en.wikipedia.org/wiki/Special:NewPagesFeed | EnWiki Special:NewPagesFeed ]]
# Click SET FILTERS
# Go to **Were created by:** and enter username "Example". (Or any other username that will return few or zero articles.)
# Click SET FILTERS (at the bottom of the popup) to activate the filter, and receive a list with zero or few matches.
# Click SET FILTERS again
# Scroll down as far as possible. Observe that the popup still runs off the bottom of the screen, leaving some popup controls inaccessible. Modifying the browser zoom% did not help.
Tested with Chrome browser on Windows.
Workaround: Fortunately the last popup item on screen for me was the **Were created by:** field. I deleted the username and activated the modified filter with an ENTER keypress. This generated a long generating a page with a long list. The entire popup was then able to fit on screen.