WD21 - Google map error "browser not supported" (no replies)

Hi,

when using the Google map control I'm getting an error "browser not supported by JavaScript-API of Google Maps".
According to Google all modern browsers are supported [developers.google.com]
And I'm running the latest Win10 with Edge and Chrome installed.
Does the map control needs some additional rights or maybe there's is a mismatch with the default browser (currently Edge)?