I am using drag drop in my case.The selection indicator is not appearing on full icon in my case. kindly help.
position: Cesium.Cartesian3.fromDegrees(latLngArray[0], latLngArray[1]),
billboard: {
image: imageName,
width: iconData.width !== 55 ? iconData.width : imgWidth,
height: iconData.height !== 55 ? iconData.height : imgHeight,
rotation: iconData.rotation,
heightReference: Cesium.HeightReference.RELATIVE_TO_GROUND,
verticalOrigin: Cesium.VerticalOrigin.BOTTOM,
horizontalOrigin: Cesium.HorizontalOrigin.CENTER
}