I use Qgis 2.18.3 and tried to set default values in new column in a existing shapefile via the layer properties as described here: Setting a default value in a QGIS field or here How to set a default value for attributes in shapefiles?.
But fields are not populated, tried several field combinations: text, real, integer but always no result. Tried some combinations with editing layer/not editing layer. Is there kowen issue or bug with this function? Do I miss an crucial step?