As a follow up to @Pginer-WMF notes:
(1) Keyboard selection should be possible. Currently when typing "Registered" and hitting enter, nothing happens. I'd expect to have the top element highlighted by default when typing and being able to move up and down with cursors.
(2) Focusing the search bar should make the page progressively scroll to mode the filter area to the top of the page, leaving more room for filters.