import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class PlatformExitBug extends Application {

    @Override
    public void start(final Stage stage) {
        VBox root = new VBox();
        final Scene scene = new Scene(root, 400, 300);

        Button closeButton = new Button("Close");
        closeButton.setOnAction(e -> stage.close());

        root.getChildren().add(closeButton);

        stage.setScene(scene);
        stage.show();
    }

    public static void main(final String[] args) {
        Application.launch(args);
    }
}