The filter function seems not working with sense.
Designer with sense will know if you are applying a filter it means you are narrowing down the results. But when you apply the filter Grindr not only narrowing the results but reducing the results as it like. This does makes sense why without any filter the results are more but with any filter the results are much more lesser. For example age filter.
I hope the designer for Grindr will work with some sense rather than ruining or chasing away the users.