Hi! Can I get a sense check on a facet issue please - I have searched for a similar issue and found nothing. I have a search index with an integer array of category_ids set to allow facet - this works fine and given the keyword, say "123" it comes back with a facet count of a certain category of, say 90 - when the user clicks that category, I combine that original term with the clicked id by just adding filter_by: category_ids:=5 but then the number of hits doesn't match - facet says 90 but actually 85 results are returned (for example) - am I doing something obviously wrong?