If you are using plugin Regions for WP Job Manager you’ll notice the Region filter doesn’t work on Resumes page. For some reason the functionality exists but is not enabled for resumes, (please note this is 3rd party plugin, not our code)
To fix it you need to go to Plugins -> Plugin Editor, find on list in “Select plugin to edit” the “Regions for WP Job Manager“, it will automatically open first file to edit which is wp-job-manager-locations.php, scroll down to line 92:

 

you’ll see lines we have to uncomment, all you need to do is to remove the // from the beginning of each line.

After that save the changes and it will work.