Google Maps not visible in sidebar

I'm running the Google Maps plugin within a Genesis child theme. I can use a shortcode in the body of a post and it works as expected. However, when I use the same shortcode within a text widget in the sidebar, only the widget title appears.

I have tried the Google Maps widget, selecting my chosen map, as well as a text widget with the shortcode. Both produce the same results: only the widget title is visible. I have inspected the page, and I can see the javascript referencing the map with all the settings I entered. But the image itself is not visible on the page.

The map should show up on http://www.midcitystoragemonroe.com/contact-us/

I have granted support access. Any assistance would be most appreciated.