Bug when detach & re-attach GWT highcharts

[tvhnet]

GWT Highcharts does not retain original view if I detach and re-attach a rendered chart. This problem happens when Axis categories is set and the chart is inverted.

I suspect BaseChart.onLoad() causes it.

Here is my test code in GWT:

        String[] categories = new String[12];
        Number[] values = new Number[12];
        for (int i = 0; i < 12; i++)
        {
            categories[i] = String.valueOf((char) (65 + Random.nextInt(25))) + String.valueOf((char) (65 + Random.nextInt(25)));
            values[i] = Random.nextDouble();
        }

        final Chart chart = new Chart()
                .setWidth(400)
                .setHeight(400)
                .setInverted(true)
                .setType(Series.Type.COLUMN);
        RootPanel.get().add(chart);

        chart.getXAxis().setCategories(categories);
        chart.addSeries(chart.createSeries().setPoints(values));

        RootPanel.get().add(new Button("test", new ClickHandler()
        {
            @Override
            public void onClick(ClickEvent event)
            {
                chart.removeFromParent();
                RootPanel.get().add(chart);
            }
        }));

When click on "test" button, labels of xAxis are changed. My expectation is nothing changed.

I also test this case on pure Highcharts. This problem does not happen. Check it here:

• create series after rendered: http://jsfiddle.net/6mMWZ/11/
• create series before rendered: http://jsfiddle.net/6mMWZ/12/

[tvhnet]

This problem still happens if I remove chart.setInverted(true) and change series type to BAR.

[tvhnet]

It seems that chart.setPersistent(true) should keep axis categories together with point array. I also wonder about axis min/max, chart extremes, plot line/band...