The grey map area which some of you had noticed has now been resolved. It was happening because the map was loading before the options were ready so that’s no longer the case and as far as I can see, it’s not happening anymore.
I’ve pushed the update which also includes an action for adding either a list of word address or a list of lat/lng coordinates with some other options like labels and marker id’s.
To find out if a marker is contained within the boundries of a polygon, there’s also an action which does this that doesn’t require the map to be loaded so can run within backend workflows.
Demo page updated.