I have updated from Java 8u05 to Java 8u20. Now StackedBarCharts are rendered incorrect: all values (except the topmost category) seem to be truncated to the next integer value. Values smaller then 1 disappear.


import javafx.application.*;
import javafx.collections.*;
import javafx.scene.*;
import javafx.scene.chart.*;
import javafx.stage.*;

public class StackedBarChartTest extends Application {

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

  @Override
  public void start(Stage primaryStage) throws Exception {

    XYChart.Series<String, Number> seriesA = new XYChart.Series<String, Number>();
    seriesA.setName("A");
    seriesA.getData().add(new XYChart.Data<String, Number>("1", 0.1));
    seriesA.getData().add(new XYChart.Data<String, Number>("2", 0.2));
    seriesA.getData().add(new XYChart.Data<String, Number>("3", 0.3));
    seriesA.getData().add(new XYChart.Data<String, Number>("4", 0.4));
    seriesA.getData().add(new XYChart.Data<String, Number>("5", 1.7));

    XYChart.Series<String, Number> seriesB = new XYChart.Series<String, Number>();
    seriesB.setName("B");
    seriesB.getData().add(new XYChart.Data<String, Number>("1", 0.5));
    seriesB.getData().add(new XYChart.Data<String, Number>("2", 0.6));
    seriesB.getData().add(new XYChart.Data<String, Number>("3", 0.7));
    seriesB.getData().add(new XYChart.Data<String, Number>("4", 0.8));
    seriesB.getData().add(new XYChart.Data<String, Number>("5", 1.9));

    XYChart.Series<String, Number> seriesC = new XYChart.Series<String, Number>();
    seriesC.setName("C");
    seriesC.getData().add(new XYChart.Data<String, Number>("1", 0.9));
    seriesC.getData().add(new XYChart.Data<String, Number>("2", 1.0));
    seriesC.getData().add(new XYChart.Data<String, Number>("3", 1.1));
    seriesC.getData().add(new XYChart.Data<String, Number>("4", 1.2));
    seriesC.getData().add(new XYChart.Data<String, Number>("5", 2.1));

    ObservableList<String> categories = FXCollections.observableArrayList("1", "2", "3", "4", "5");
    StackedBarChart<String, Number> chart = new StackedBarChart<String, Number>(new CategoryAxis(categories),
                                                                                new NumberAxis());
    chart.getData().addAll(seriesA, seriesB, seriesC);

    primaryStage.setScene(new Scene(chart));
    primaryStage.show();
  }

}

screenshot of correct rendering in 8u05: http://i58.tinypic.com/15389if.jpg
screenshot of incorrect rendering in 8u20: http://i62.tinypic.com/2lux452.jpg