Application does not exit with chartfx

[DennisOlbrich]

If any gsi XYchart is used in the FX application, the application will not close, when the last window is closed. Do you have any idea what is wrong?

`package application;

import de.gsi.chart.XYChart;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.AnchorPane;
import javafx.stage.Stage;

public class XYChartMain extends Application {

@Override
public void start(Stage primaryStage) throws Exception {
	XYChart chart = new XYChart();

	AnchorPane ap = new AnchorPane();
	ap.getChildren().add(chart);

	Scene scene = new Scene(ap, 640, 480);
	primaryStage.setScene(scene);

	primaryStage.show();
}

public static void main(String[] args) {
	// TODO Auto-generated method stub
	launch(args);
}

}`