I thought at first this was a bug, but then I played around with the demo and realized it is not.
I know when categories appear on the search results page, you get All Categories and then all the categories, but if you search by category, then on the following results page, only the All Categories and that specific category appears.
I don’t want that.
I want all categories to appear on EVERY search page. Not just the one I’m filtering. Is there a setting or code to enable this?