Polygons do not appear in a map

Polygons dissappear after creating a geolocation area.

Technical note: We tested if fldIndex: number | undefined is not undefined just by (fldIndex) expression which results in false negative for 0. fldIndex is an index of the column where the geo data is located, was 0 in this case and moreover this form of the condition only applied when the map is sourced by editable data, which was the case as well.