Random threading issue.

--------------------------------------------------------------------- HelloListView -----
java -cp D:\cygwin\home\yaow\integration\build\artifacts\sdk/rt/lib/jfxrt.jar;di
st/HelloWorld.jar helloworld.HelloListView
Disabled in HelloListView due to FilteredList bug
SelectedIndex: 8
SelectedIndices: [8], removed: [], addedFrom: 0, addedTo: 1
SelectedIndex: 7
SelectedIndices: [7], removed: [], addedFrom: 0, addedTo: 1
SelectedIndex: 4
SelectedIndices: [4], removed: [], addedFrom: 0, addedTo: 1
Exception in thread "JavaFX Application Thread" java.lang.IllegalStateException
        at com.sun.javafx.collections.NonIterableChange.checkState(NonIterableCh
ange.java:101)
        at com.sun.javafx.collections.NonIterableChange.getPermutation(NonIterab
leChange.java:81)
        at javafx.collections.ListChangeListener$Change.wasPermutated(ListChange
Listener.java:156)
        at com.sun.javafx.collections.transformation.SortedList.onSourceChanged(
SortedList.java:402)
        at com.sun.javafx.collections.transformation.TransformationList$1.onChan
ged(TransformationList.java:107)
        at com.sun.javafx.collections.ListListenerHelper$Generic.fireValueChange
dEvent(ListListenerHelper.java:291)
        at com.sun.javafx.collections.ListListenerHelper.fireValueChangedEvent(L
istListenerHelper.java:48)
        at com.sun.javafx.collections.ObservableListWrapper.callObservers(Observ
ableListWrapper.java:97)
        at com.sun.javafx.collections.ObservableListWrapper.add(ObservableListWr
apper.java:154)
        at com.sun.javafx.collections.ObservableListWrapper.add(ObservableListWr
apper.java:144)
        at helloworld.HelloListView$28.handle(HelloListView.java:742)
        at helloworld.HelloListView$28.handle(HelloListView.java:739)
        at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Comp
ositeEventHandler.java:69)
        at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventH
andlerManager.java:217)
        at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventH
andlerManager.java:170)
        at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(C
ompositeEventDispatcher.java:38)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDis
patcher.java:37)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispat
chChainImpl.java:92)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDis
patcher.java:35)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispat
chChainImpl.java:92)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDis
patcher.java:35)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispat
chChainImpl.java:92)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDis
patcher.java:35)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispat
chChainImpl.java:92)
        at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:53)
        at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:33)
        at javafx.event.Event.fireEvent(Event.java:171)
        at javafx.scene.Scene$KeyHandler.process(Scene.java:3497)
        at javafx.scene.Scene$KeyHandler.access$2300(Scene.java:3452)
        at javafx.scene.Scene.impl_processKeyEvent(Scene.java:1855)
        at javafx.scene.Scene$ScenePeerListener.keyEvent(Scene.java:2251)
        at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleKeyEvent(GlassV
iewEventHandler.java:126)
        at com.sun.glass.ui.View.handleKeyEvent(View.java:518)
        at com.sun.glass.ui.View.notifyKey(View.java:950)
        at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
        at com.sun.glass.ui.win.WinApplication.access$100(WinApplication.java:29
)
        at com.sun.glass.ui.win.WinApplication$2$1.run(WinApplication.java:62)
        at java.lang.Thread.run(Thread.java:722)