Method changed

core/src/processing/javafx/PSurfaceFX.java:590–594

(ObservableValue<? extends Number> value,
                          Number oldX, Number newX)

  public void setupExternalMessages() {
    stage.xProperty().addListener(new ChangeListener<Number>() {
      @Override
      public void changed(ObservableValue<? extends Number> value,
                          Number oldX, Number newX) {
        sketch.frameMoved(newX.intValue(), stage.yProperty().intValue());
      }
    });

    stage.yProperty().addListener(new ChangeListener<Number>() {