Google Streetview does not hide marker over great distance

Question

Google Streetview does not hide marker over great distance

I am using Google Maps API v3 (Streetview) to "preview" views of a wind turbine in place. I am currently using a custom image marker to show the wind turbine on the map. This works as expected, the windmills appear and look pretty pretty. However, when I am still far away, at some point the markers are no longer displayed. (see link)

One of the turbines is no longer displayed .. :(

Does anyone know if it is possible to make markers visible at a longer distance?

I adapted the StreetView marker example from google maps.

EDIT: What I'm basically trying to achieve is to make markers at a longer distance. What happens now, when you are far enough from the marker, it no longer displays.

var panorama;

function initMap() {
  
  // positions of the windmills
  var mill_pos = [
    {lat: 53.281593, lng: 6.371393},
    {lat: 53.281927, lng: 6.371424},
    {lat: 53.282388, lng: 6.371357},
    {lat: 53.282926, lng: 6.371250},
  ];

  // start position
  var startPos = {lat: 53.281413, lng: 6.371178};

  // Set up the map
  var map = new google.maps.Map(document.getElementById('map'), {
    center: startPos,
    zoom: 18,
    streetViewControl: false
  });

  // place the markers
  var mill_markers = [];
  mill_pos.forEach(function(pos){
    mill_markers.push(new google.maps.Marker({
      position: pos,
      map: map,
      icon: 'https://www.immediateentourage.com/ie/wp-content/uploads/2011/10/Wind+Turbine+Original+Photo+by+Eclipse.sx_2.png',
      title: 'Turbine'
    }))


  });

  // We get the map default panorama and set up some defaults.
  // Note that we don't yet set it visible.
  panorama = map.getStreetView();
  panorama.setPosition(startPos);
  panorama.setPov(/** @type {google.maps.StreetViewPov} */({
    heading: 0,
    pitch: 0
  }));
  panorama.setVisible(true);
}

/* Always set the map height explicitly to define the size of the div
 * element that contains the map. */
#map {
  height: 100%;
}
/* Optional: Makes the sample page fill the window. */
html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}
#floating-panel {
  position: absolute;
  top: 10px;
  left: 25%;
  z-index: 5;
  background-color: #fff;
  padding: 5px;
  border: 1px solid #999;
  text-align: center;
  font-family: 'Roboto','sans-serif';
  line-height: 30px;
  padding-left: 10px;
}
#floating-panel {
  margin-left: -100px;
}

<body>

  <div id="map"></div>
  <script async defer src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBYkokiNLc6ksDgKlkI0aLuhF9Lwbl1dX0&callback=initMap"></script>

</body>