I already used this widget in my search, it’s a good solution to show currently enabled filters when there’s no result, but if there are results, it duplicates the information since enabled filters are both shown in the refinement list & on the widget.
Anyway, I guess there’s no easy solution to my issue if not for a custom workaround.
I hope someday there will be an option in ais-refinement-list that would let us choose if filters should stay visible with no results.