JavaFX 2.0 :: Horizontal Stacked Bar Chart

Using the sample, I tried to create a horizontal stacked bar chart, but it didn't render correctly.  Only a sliver of one bar shows and cosmetically the bar's rounded corners are at the top instead of the right side.
 
    @Override
    public void start(Stage primaryStage) {
        String austria = "Austria";
        String brazil = "Brazil";
        NumberAxis xAxis = new NumberAxis();
        xAxis.setLabel("Value");
        xAxis.setTickLabelRotation(90);

[Code] ....
 
Oddly, if I change the second series to this, then only one bar shows:
 
        series2.getData().add(new XYChart.Data(10, austria));
        series2.getData().add(new XYChart.Data(15, brazil));