I have a StackedAreaChart<Number, Number> with setCreateSymbols(false) & setAnimated(true) that outputs to the console the following exception:

java.lang.NullPointerException: Children: child node is null: parent = Group@2efb5ffb[styleClass=plot-content]
at javafx.scene.Parent$2.onProposedChange(Unknown Source)
at com.sun.javafx.collections.VetoableListDecorator.add(Unknown Source)
at javafx.scene.chart.StackedAreaChart.lambda$dataItemAdded$555(Unknown Source)
at javafx.scene.chart.StackedAreaChart$$Lambda$185/726731690.handle(Unknown Source)
at com.sun.scenario.animation.shared.TimelineClipCore.visitKeyFrame(Unknown Source)
at com.sun.scenario.animation.shared.TimelineClipCore.playTo(Unknown Source)
at javafx.animation.Timeline.impl_playTo(Unknown Source)
at javafx.animation.AnimationAccessorImpl.playTo(Unknown Source)
at com.sun.scenario.animation.shared.SingleLoopClipEnvelope.timePulse(Unknown Source)
at javafx.animation.Animation.impl_timePulse(Unknown Source)
at javafx.animation.Animation$1.lambda$timePulse$25(Unknown Source)
at javafx.animation.Animation$1$$Lambda$168/1619881974.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at javafx.animation.Animation$1.timePulse(Unknown Source)
at com.sun.scenario.animation.AbstractMasterTimer.timePulseImpl(Unknown Source)
at com.sun.scenario.animation.AbstractMasterTimer$MainLoop.run(Unknown Source)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(Unknown Source)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(Unknown Source)
at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$363(Unknown Source)
at com.sun.javafx.tk.quantum.QuantumToolkit$$Lambda$41/789558128.run(Unknown Source)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(Unknown Source)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$141(Unknown Source)
at com.sun.glass.ui.win.WinApplication$$Lambda$37/2052915500.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

If I set animate to false, or set create symbols to true, it works fine.

The actual chart works OK, it's just very hard to see other trace in the console when thousands of lines of call stacks are being output.