javafx.scene.control.ComboBoxTest > test_rt31479 FAILED
    java.util.ConcurrentModificationException
        at java.util.HashMap$HashIterator.nextEntry(HashMap.java:2290)
        at java.util.HashMap$EntryIterator.next(HashMap.java:2361)
        at java.util.HashMap$EntryIterator.next(HashMap.java:2359)
        at javafx.scene.CssStyleHelper.resetToInitialValues(CssStyleHelper.java:280)
        at javafx.scene.CssStyleHelper.createStyleHelper(CssStyleHelper.java:177)
        at javafx.scene.Node.impl_processCSS(Node.java:8639)
        at javafx.scene.Parent.impl_processCSS(Parent.java:1202)
        at javafx.scene.control.Control.impl_processCSS(Control.java:863)
        at javafx.scene.Parent.impl_processCSS(Parent.java:1217)
        at javafx.scene.control.PopupControl$CSSBridge.impl_processCSS(PopupControl.java:1221)


Same failure exists in Ensemble's Control/ComboBox.