Charts: RangeSelector causes no data to be displayed

Using the new RangeSelector causes our charts to not show any values, even though there are in fact values present:

When I select all data then data is shown:

Why is the RangeSelector not working? Is there something we are not doing that we should do?

Here is the code that I copied from the Vaadin examples, it uses random integers between 1 and 100 as data points:

public class ChartExample extends CustomComponent {
    public ChartExample() {
        BorderLayoutCenterBottom borderLayout = new BorderLayoutCenterBottom();

        Component chart = createExampleChart();
        borderLayout.center.addComponent(chart);
        borderLayout.center.setExpandRatio(chart, 1.0f);
        setCompositionRoot(borderLayout);
    }

    public Component createExampleChart() {
        final Chart chart = new Chart();
        chart.setSizeFull();
        chart.setTimeline(true);

        Configuration configuration = chart.getConfiguration();
        configuration.getTitle().setText("Random Integers");

        DataSeries dataSeries = new DataSeries();
        for (int i = 0; i < 100; i++) {
            DataSeriesItem item = new DataSeriesItem();
            item.setX(Date.from(LocalDateTime.ofInstant(new Date().toInstant(), ZoneId.systemDefault()).minusDays(i*7).atZone(ZoneId.systemDefault()).toInstant()));
            item.setY(ThreadLocalRandom.current().nextInt(1, 100));
            dataSeries.add(item);
        }
        configuration.setSeries(dataSeries);

        RangeSelector rangeSelector = new RangeSelector();
        rangeSelector.setSelected(5);
        configuration.setRangeSelector(rangeSelector);

        chart.drawChart(configuration);

        return chart;
    }
}

Yes, thank you that was the problem. When not sorting x in an ascending way I got this error in the JS console:

VM161:8 Highcharts error #15: www.highcharts.com/errors/15

When I sorted the X values, everything worked fine:

for (int i = 0; i < 100; i++) {
    DataSeriesItem item = new DataSeriesItem();
    item.setX(Date.from(LocalDateTime.ofInstant(new Date().toInstant(), ZoneId.systemDefault())[b].minusYears(2).plusDays(i)[/b].atZone(ZoneId.systemDefault()).toInstant()));
    item.setY(ThreadLocalRandom.current().nextInt(1, 100));
    dataSeries.add(item);
}

Shouldn't this be something that the Chart Component should take care of? Or at least print a warning on the logger?