Whenever an event has an unspecified location, the phrase "Map Unavailable" is displayed on the event's details page. This is somewhat misleading as it indicates IMHO a technical issue with the map provider.
This all corresponds with the setting "This event does not have a physical location" which has completely different semantics.
I would like the plug-in to be more specific about the location:
a) "This event does not have a physical location",
for example for a webinar or the like
b) "The location will be announced later/in due time"
when the location is not yet fixed
c) "Map unavailable"
when the location is made-up/cannot be located (e.g. 'on the moon')