Google Map Widget not showing in Firefox

[MattiaSilvestri]

I'm using Django 4.2 (but tested also with django 5.1.5 with the same results) and the latest version of the package (0.5.1) and I'm having some issues with the reliability of the Google Map widget: in Firefox and other firefox-based browsers the widget is consistently never shown (only controls and find location field are visible, the map is just an empty space), while in other browsers is visble most of the times, even tho it's a bit unstable and sometimes I need to refresh the page to see it.
I tested also with leaflet which shows up correctly on Firefox, I didn't test with mapbox.

I tested the issue with the demo project found in this repo to rule out it could be an issue of my config, but the issue persisted.