It's confusing that the metadata filter for "Location" filters on metadata field "Sublocation". This is confusing until you figure it out. Adobe should assure that field names in the filter tool match the field name in the Metadata Panel they filter on. Should be an easy fix.
Thanks -- Dan
You might repost this in the official Adobe feedback forum: Recently active topics in Photoshop Family about Photoshop Lightroom. This forum is a user-to-user forum, which Adobe monitors less frequently.