Why does the 'Location' filter on Career Page not show the posted location?

Why does the 'Location' filter not show the posted location (in this case the city of Berlin), even though there is a job posting posted there?
This is always the case, if the country is already specified in the search bar.

If nothing is entered in the Search bar, Berlin is found through the 'Location' filter.

This search bar and filter behaviour is not comprehensive (for us and for applicants). Can somebody explain this logic? Thank you.