Drop Downs Not Working In Link Editor

I’m assuming this may be specific to me, but some of my drop downs within Link editing don’t work. When I am editing a link, all of the drop downs (ie. Categories, Target, Link Relationship etc.) don’t drop down — I click but nothing happens. They show up normally in creating a new post or other areas — is there a way to manually hack WP so it will show automatically so I can access them, or is something else foul afoot?

In case this is confusing, this is the area that I am talking about: https://i263.photobucket.com/albums/ii131/pbh_photo/Picture4.png