I just noticed that Lightroom doesn't automatically fill information about Region, State/Province, Country and Country Code when I geolocate pictures with the mapping module. I can't find in the preferences where I can change that setting. Any thoughts?
Is this started happening after the recent update 2015.6/6.6.
Also, you can try resetting the Lightroom preferences and check if that helps.
Press the shift + option keys immediately after you restart Lightroom, and select Reset Preferences from the resulting dialog box.