I have a self-hosted Shortlist story map delivered to the user in an iframe. It seems as though the map layer (an ESRI vector basemap) is not rendering in some environments...or at least one. I have someone on a Windows 10 Pro machine running the latest version of Chrome and they don't see the basemap. It works in Edge just fine. I can't seem to replicate the issue in MY Windows 10/Chrome environment.
Any ideas as to what might be causing this?
Edit: Updated Link