GD Map listings page widget not loading

I have the details pages configured to show a map in the GD Detail Top Section widget area. The map usually loads fine. However, I’m also trying to add a button on the details pages that triggers a modal which contains a form. The modal works fine, but now the map no longer loads.

The modal contains an iframe which runs a script and I assume that the script loading is causing the conflict because the modal doesn’t interfere if I remove the script and just add text.

Any ideas to troubleshoot? I’d like to try running the GD Map – Listing Page widget in async mode, but am not sure how to do that.