Sort by 'Is Featured?' not working on search results page

Hi,

We’d like to show listings sorted by ‘Is featured?’ descending (for our ‘Culture’ and ‘Outdoors’ CPTs) and we’ve configured our settings accordingly – see screenshot_1 – however when we add a location, the featured listings are not shown first.

To test, go to https://getaboutable.com and conduct a search for “Culture” in “canberra”, you’ll see the National Museum of Australia isn’t shown first (although if you leave location blank, it is shown first).

Any idea why?

Thanks,
Andrew