No the Theme itself doesn’t control or have a way to affect that part of the Admin/Editor, so I would say it must be something external causing that issue.
I took a screenshot of the demo to make sure – https://i.imgur.com/KCZcIMA.png
It could be another plugin, or perhaps a faulty WP/Genesis installation. See if you can re-install WordPress using the option on the Updates page. If that doesn’t fix then try temporarily disabling some plugins to see if that does something.