Indexer fails to correctly parse properties with special characters

For example:

"SpatialArea": {
      "Wgs84Coordinates": {
        "features": [
          {
            "geometry": {
              "type": "Point",
              "coordinates": [
                2.2863,
                61.198685
              ]
            },
            "properties": {
              "id": "a:b"            
             },
            "type": "Feature"
          }
        ],
        "type": "FeatureCollection"
      }
    }

Indexer fails to parse the properties id whose value contains a colon.