Axis: setTickLabelRotation does not work

setTickLabelRotation does not work if used before showing of scene.

import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.chart.Axis;
import javafx.scene.chart.CategoryAxis;
import javafx.scene.chart.Chart;
import javafx.scene.chart.ScatterChart;
import javafx.scene.chart.XYChart;
import javafx.scene.chart.XYChart.Series;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class Main extends Application {

    @Override
    public void start(Stage stage) {
        VBox content = new VBox();
        Series s1 = new Series( FXCollections.observableArrayList(
                    new XYChart.Data("First", "Green"),
                    new XYChart.Data("Second", "Blue"),
                    new XYChart.Data("Fourth", "Red")
                ));
        s1.setName("Set 1");
        Series s2 = new Series( FXCollections.observableArrayList(
                    new XYChart.Data("First", "Red"),
                    new XYChart.Data("Second", "Green"),
                    new XYChart.Data("Fourth", "Blue")
                ));
        s2.setName("Set 2");
        Series s3 = new Series( FXCollections.observableArrayList(
                    new XYChart.Data("First", "Blue"),
                    new XYChart.Data("Second", "Red"),
                    new XYChart.Data("Third", "Green")
                ));
        s3.setName("Set 3");
        ObservableList data = FXCollections.observableArrayList(s1, s2, s3);
        Axis y_axis = new CategoryAxis();
        Axis x_axis = new CategoryAxis(FXCollections.<String>observableArrayList("First", "Second", "Third", "Fourth"));
        Chart chart = new ScatterChart(x_axis, y_axis, data);
        x_axis.setTickLabelRotation(45);
        y_axis.setTickLabelRotation(45);
        content.getChildren().add(chart);
        stage.setScene(new Scene(content, 400, 400));
        stage.show();
// x_axis.setTickLabelRotation(45);
// y_axis.setTickLabelRotation(45);
    }
    public static void main(String[] args) {
        launch(Main.class, args);
    }
}