Taxonomy terms are configured as such:
Parent category 1 - Child category 1 - Child category 2 Parent category 2 - Child category 3 - Child category 4
"Empty facet behaviour" is set to "Do not display facet".
"Flatten hierarchy" is turned off.
"Treat parent items as individual facet items" is turned off.
But the facet display doesn't show the parent items. How do I configure it properly to do so?