SimplePolylineGeometry fails crossing IDL if colors specified

[hpinkos]

DeveloperError: All attribute lists must have the same number of attributes.
Error in GeometryPipeline.wrapLongitude. It doesn't add to the color attribute of the SimplePolylineGeometry when it adds to the position attribute.

Sandcastle example:

var positions = [Cesium.Cartesian3.fromDegrees(-74.0, 40.0), Cesium.Cartesian3.fromDegrees(179, 30)];

viewer.scene.primitives.add(new Cesium.Primitive({
    geometryInstances : new Cesium.GeometryInstance({
        geometry : new Cesium.SimplePolylineGeometry({
            colors: [Cesium.Color.RED], // this line causes the problem
            positions : positions
        })
    }),
    appearance : new Cesium.PerInstanceColorAppearance({
        flat : true,
        renderState : {
            depthTest : {
                enabled : true
            },
            lineWidth : Math.min(2.0, viewer.scene.maximumAliasedLineWidth)
        }
    })
}));

[hpinkos]

related error: PolylineGeometry fails also if a model matrix is used to move the line across the IDL. prevPosition, nextPositoin, and expandAndWidth attributes are not divided. The function needs to use some sort of loop on the attributes instead of only looking for normals, binormals, tangents and texture coordinates.