Just run a PieChart Demo, when labelsVisible was true,It displays ok. But I do setLabelsVisible(false) or labelVisibleProperty.set(false) with NPE

Caused by: java.lang.NullPointerException
at javafx.scene.chart.PieChart.layoutChartChildren(PieChart.java:548)

I check openjfx8's PieChart source file,It run perfectly!