Polyline "editable" attribute works or doesn't

[Permafacture]

For instance, example2.html. if you click on the polygon check box first, then the polyline, the polyline will not be editable. if you click on the polyline first and then the polygon, the polyline will be editable. apparently, the editable attribute of a polyline isn;t supported in V3 of google maps API, but works sometimes?