Google Maps SVG marker doesn't display on IE 11

My SVG map marker disappears on IE11. It's visible in Chrome, Firefox, Safari, IE9 & 10, but not 11. I've uploaded a JSfiddle of my current code. I can't tell if this is me or a bug with Google Maps.

I've uploaded a JSfiddle of my current code

<html>
  <head>
    <script type="text/javascript"
      src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCyfFUUVxVyoCicnttJfj-w63wzfbTKV3Y&sensor=false">
    </script>
    <style type="text/css">
      html { height: 100% }
      body { height: 100%; margin: 0; padding: 0 }
      #map-canvas { height: 100% }
    </style>
    <script>

function initialize() {

  var sanfrancisco = new google.maps.LatLng(37.78062,-122.397203);

  var mapOptions = {
    zoom: 18,
    zIndex:0,
    center: sanfrancisco,
    mapTypeControl: true,
    mapTypeControlOptions: {
      mapTypeIds: [google.maps.MapTypeId.ROADMAP, 'usroadatlas']
    },zoomControl: true,
    zoomControlOptions: {
      style: google.maps.ZoomControlStyle.SMALL
    },
  };

  var map = new google.maps.Map(document.getElementById('map-canvas'),
      mapOptions);

  // var image = 'img/1p_marker3.png';
  var image = 'http://firstperson.is/assets/img/contact/map_marker.svg';

var marker = new google.maps.Marker({
    position: sanfrancisco,
    map: map,
    icon: image
  });

  var roadAtlasStyles = [
    {
    "featureType": "poi",
    "elementType": "geometry",
    "stylers": [
      { "visibility": "off" }
    ]
  },{
    "featureType": "landscape",
    "elementType": "geometry.fill",
    "stylers": [
      { "color": "#003a70" }
    ]
  },{
    "featureType": "landscape",
    "elementType": "geometry.stroke",
    "stylers": [
      { "color": "#0075c9" }
    ]
  },{
    "featureType": "administrative.land_parcel",
    "stylers": [
      { "visibility": "off" }
    ]
  },{
    "elementType": "labels.text.fill",
    "stylers": [
      { "color": "#ffffff" }
    ]
  },{
    "elementType": "labels.text.stroke",
    "stylers": [
      { "visibility": "off" }
    ]
  },{
    "featureType": "road.arterial",
    "elementType": "geometry",
    "stylers": [
      { "color": "#0075c9" }
    ]
  },{
    "featureType": "road",
    "elementType": "labels.text.fill",
    "stylers": [
      { "color": "#ffffff" }
    ]
  },{
    "featureType": "road.local",
    "elementType": "geometry",
    "stylers": [
      { "color": "#0075c9" }
    ]
  },{
    "featureType": "road.highway",
    "elementType": "geometry",
    "stylers": [
      { "color": "#d0343a" }
    ]
  },{
    "featureType": "road.highway.controlled_access",
    "elementType": "geometry",
    "stylers": [
      { "color": "#ff4539" }
    ]
  },{
    "featureType": "transit.line",
    "elementType": "geometry",
    "stylers": [
      { "color": "#0075c9" }
    ]
  },{
    "featureType": "transit",
    "elementType": "labels.text.fill",
    "stylers": [
      { "color": "#ffffff" }
    ]
  },{
    "featureType": "poi",
    "elementType": "labels.icon",
    "stylers": [
      { "invert_lightness": true },
      { "hue": "#0077ff" }
    ]
  },{
    "featureType": "poi",
    "elementType": "labels.text",
    "stylers": [
      { "visibility": "off" }
    ]
  },{
    "featureType": "poi",
    "elementType": "labels",
    "stylers": [
      { "visibility": "off" }
    ]
  },{
    "featureType": "poi.park",
    "elementType": "labels.text.fill",
    "stylers": [
      { "visibility": "on" },
      {"color":"#ffffff"}
    ]
  },{
    "featureType": "poi.park",
    "elementType": "labels.icon",
    "stylers": [
      { "visibility": "on" }
    ]
  },{
    "featureType": "poi.sports_complex",
    "elementType": "labels.text.fill",
    "stylers": [
      { "visibility": "on" },
      {"color":"#ffffff"}
    ]
  },{
    "featureType": "administrative",
    "elementType": "labels.text.fill",
    "stylers": [
      { "color": "#ffffff" }
    ]
  },{
    "featureType": "administrative.neighborhood",
    "elementType": "labels.text",
    "stylers": [
      { "visibility": "off" }
    ]
  },{
    "featureType": "administrative.province",
    "elementType": "geometry",
    "stylers": [
      { "visibility": "on" },
      { "weight": 0.9 }
    ]
  }
  ];


  var styledMapOptions = {
    name: 'US Road Atlas'
  };

  var usRoadMapType = new google.maps.StyledMapType(
      roadAtlasStyles, styledMapOptions);

  map.mapTypes.set('usroadatlas', usRoadMapType);
  map.setMapTypeId('usroadatlas');

  // var transitLayer = new google.maps.TransitLayer();
  // transitLayer.setMap(map);
};

google.maps.event.addDomListener(window, 'load', initialize);

    </script>

  </head>
  <body>
    <div id="map-canvas"></div>
  </body>
</html>

Adding scaledSize to the image/icon and optimized: false to the marker solved it for me.

http://jsfiddle.net/kQRbr/31/

var image = {
    url: 'https://cdnjs.cloudflare.com/ajax/libs/foundicons/3.0.0/svgs/fi-marker.svg',
    scaledSize: new google.maps.Size(100, 100),
}

var marker = new google.maps.Marker({
    position: sanfrancisco,
    map: map,
    optimized: false,
    icon: image
});

It seems Google Maps currently doesn't support using SVGs for marker images. You can have vector marker icons though, by using a Symbol object.

For more details, see my answer to this question.