Google Maps display problems

I have a page containing a map configured with Wappler’s GooglelMaps.
The address is dynamic and receives data from the database
Apparently it seems to work, but sometimes to view the map it is necessary to update the page two or more times, because at the first opening it is not visible
Maybe I’m wrong? Or is it a known problem?
Thanks to who can answer me
Schermata 2020-06-03 alle 23.04.53 Schermata 2020-06-03 alle 23.05.15

It is probably due to the fact that save only an address in the records (example Rome Via Veneto 1) and not the longitude and latitude data.
But this is to facilitate the customer’s work.
It would be ideal if latitude and longitude were automatically generated when entering an address.
Maybe with a script function. But I didn’t find anything for this