The map zoom out, and scroll out from the field of view

[gabboraron]

I'm new at kivy so maybe I do something wrong, but I can scroll out from the map, and then the map disappear. I also add max_zoomto the .kv file, but nothing has changed.

I use these settings in .kv file:

        MapView:
            lat:47.456591
            lon:19.029897
            zoom:5
            max_zoom: 10
            double_tap_zoom: True

Is there any solution for this kind of problem? I didn't find it yet.