There's a new feature for Map called "Enable Dynamic Map" which ensures that users see a live map. It's a Business feature. If a user does not have this turned on, there is a screenshot of their map on their page until they click on the map.
Standalone isn't loading for users in IE/Edge, just shows a blank screen. This is high priority for engineering to fix, but in the meantime, redirect users to a different browser.
Some video sliders on Wix are broken, and will show this: