UIView.image does not capture subviews

[skhillon]

Summary

When I use the LocationAnnotationNode(location:view:) constructor, the view.image extension does not capture subviews such as labels when converting to UIImage.

For some reason (and I am not entirely sure why), this problem goes away when I call view.addSubview(cardView), but this also adds a new view to the window.

Code

  func addARAsset(poi: AliasablePOI) {
    let coordinate = CLLocationCoordinate2D(latitude: poi.latitude, longitude: poi.longitude)
    let location = CLLocation(coordinate: coordinate, altitude: Constants.AR.altitudeInMeters)
    let cardView = ARCardView(poi: poi)
    //view.addSubview(cardView)  <-- required
    let annotationNode = LocationAnnotationNode(location: location, view: cardView)
    annotationNode.scaleRelativeToDistance = false
    sceneLocationView.addLocationNodeWithConfirmedLocation(locationNode: annotationNode)
  }

Without addSubview

After addSubview