No map: No value provided for variable {q}

Hi guys,
I have a geofield with widget set to leaflet.widget. The geofield is full of geometry data, and the geodata displays fine in Leaflet (Bing-hybrid).

But when I go to edit the node, the geofield displays as an empty map view port.
Console says:

Using //@ to indicate sourceMappingURL pragmas is deprecated. Use //# instead backbone-min.js:2:0
Error: No value provided for variable {q} leaflet-src.js:141:10

My versions:
Leaflet: 7.x-1.1+14-dev
Leaflet_Widget: 7.x-2.0-beta1+7-dev
Geofield: 7.x-2.3
geoPHP: 7.x-1.7
Leaflet libraries: latest

Any clues or can I provide more info?

Thanks for the fabulous mapping modules!