JavaFX SubScene setFill

I'm trying to set the background of a SubScene as an image, but when I do, this happens:

This is the code:

public void start(Stage stage) throws Exception {
    PerspectiveCamera camera = new PerspectiveCamera(true);
    Group model = new Group(new Box(200, 10, 10));
    Group course = new Group(model);
    BorderPane borderPane = new BorderPane();
    Pane pane1 = new Pane(course);
    SubScene subScene1 = new SubScene(pane1, 1000, 720);
    Group homeCameraXform = new Group();
    model.getChildren().add(homeCameraXform);
    homeCameraXform.getChildren().add(camera);
    subScene1.setCamera(camera);
    camera.setNearClip(.1);
    camera.setFarClip(10000);
    camera.setTranslateZ(-1000);
    Xform s = new Xform();
    s.getChildren().add(camera);
    subScene1.setOnMouseDragged(e -> s.rx.setAngle(s.rx.getAngle()+ 10));
    borderPane.setLeft(subScene1);
    subScene1.setFill(new ImagePattern(new Image("file.jpg")));
    Scene scene = new Scene(borderPane, 1280,720, true);
    stage.setScene(scene);
    stage.show();
}

For a normal Scene with a depthBuffer, I just needed to do scene.setFill(new ImagePattern(new Image("file"))). When I try setFill(Color.RED) instead of setFill(new ImagePattern(new Image(""))), it works as expected. What else do I have to do to setFill with an ImagePattern?