Running our application with the new 8u40 b2 build today resulted in the following StackOverflow exception being thrown on many occasions...
java.lang.StackOverflowError
at javafx.scene.Node.impl_geomChanged(Node.java:3777)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.impl_geomChanged(Node.java:3778)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.impl_geomChanged(Node.java:3778)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.impl_geomChanged(Node.java:3778)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.impl_geomChanged(Node.java:3778)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.impl_geomChanged(Node.java:3778)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.impl_geomChanged(Node.java:3778)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.impl_geomChanged(Node.java:3778)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.impl_geomChanged(Node.java:3778)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.impl_geomChanged(Node.java:3778)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.impl_geomChanged(Node.java:3778)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.impl_geomChanged(Node.java:3778)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.impl_geomChanged(Node.java:3778)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.impl_geomChanged(Node.java:3778)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.impl_geomChanged(Node.java:3778)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.impl_geomChanged(Node.java:3778)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.impl_geomChanged(Node.java:3778)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.impl_geomChanged(Node.java:3778)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.impl_geomChanged(Node.java:3778)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.impl_geomChanged(Node.java:3778)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.impl_geomChanged(Node.java:3778)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.impl_geomChanged(Node.java:3778)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.impl_geomChanged(Node.java:3778)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.impl_geomChanged(Node.java:3778)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.localBoundsChanged(Node.java:3799)
at javafx.scene.Node.impl_geomChanged(Node.java:3785)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.localBoundsChanged(Node.java:3799)
at javafx.scene.Node.impl_geomChanged(Node.java:3785)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.localBoundsChanged(Node.java:3799)
at javafx.scene.Node.impl_geomChanged(Node.java:3785)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.localBoundsChanged(Node.java:3799)
at javafx.scene.Node.impl_geomChanged(Node.java:3785)
at javafx.scene.Parent.childBoundsChanged(Parent.java:1732)
at javafx.scene.Node.notifyParentOfBoundsChange(Node.java:3855)
at javafx.scene.Node.transformedBoundsChanged(Node.java:3817)
at javafx.scene.Node.localBoundsChanged(Node.java:3799)
at javafx.scene.Node.impl_geomChanged(Node.java:3785)
at javafx.scene.text.Text.impl_geomChanged(Text.java:763)
at javafx.scene.text.Text.needsTextLayout(Text.java:194)
at javafx.scene.text.Text.needsFullTextLayout(Text.java:189)
at javafx.scene.text.Text.access$200(Text.java:95)
at javafx.scene.text.Text$5.invalidated(Text.java:498)
at javafx.beans.property.ObjectPropertyBase.markInvalid(ObjectPropertyBase.java:111)
at javafx.beans.property.ObjectPropertyBase.access$000(ObjectPropertyBase.java:51)
at javafx.beans.property.ObjectPropertyBase$Listener.invalidated(ObjectPropertyBase.java:232)
at com.sun.javafx.binding.ExpressionHelper$Generic.fireValueChangedEvent(ExpressionHelper.java:349)
at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(ExpressionHelper.java:81)
at javafx.beans.property.ObjectPropertyBase.fireValueChangedEvent(ObjectPropertyBase.java:105)
at javafx.beans.property.ObjectPropertyBase.markInvalid(ObjectPropertyBase.java:112)
at javafx.beans.property.ObjectPropertyBase.set(ObjectPropertyBase.java:145)
at javafx.css.StyleableObjectProperty.set(StyleableObjectProperty.java:82)

                 ...............

           at javafx.beans.value.WeakChangeListener.changed(WeakChangeListener.java:89)
at com.sun.javafx.binding.ExpressionHelper$SingleChange.fireValueChangedEvent(ExpressionHelper.java:182)
at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(ExpressionHelper.java:81)
at javafx.beans.property.ObjectPropertyBase.fireValueChangedEvent(ObjectPropertyBase.java:105)
at javafx.beans.property.ObjectPropertyBase.markInvalid(ObjectPropertyBase.java:112)
at javafx.beans.property.ObjectPropertyBase.set(ObjectPropertyBase.java:145)
at javafx.css.StyleableObjectProperty.set(StyleableObjectProperty.java:82)
at javafx.css.StyleableObjectProperty.applyStyle(StyleableObjectProperty.java:68)
at javafx.scene.CssStyleHelper.resetToInitialValues(CssStyleHelper.java:452)
at javafx.scene.CssStyleHelper.createStyleHelper(CssStyleHelper.java:180)
at javafx.scene.Node.reapplyCss(Node.java:8787)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.impl_processCSS(Node.java:8984)
at javafx.scene.Parent.impl_processCSS(Parent.java:1239)
at javafx.scene.Node.processCSS(Node.java:8860)
at javafx.scene.Node.applyCss(Node.java:8957)
at javafx.scene.Node.impl_processCSS(Node.java:8871)
at com.sun.javafx.scene.control.skin.LabeledSkinBase.updateChildren(LabeledSkinBase.java:586)
at com.sun.javafx.scene.control.skin.LabeledSkinBase.handleControlPropertyChanged(LabeledSkinBase.java:184)
at com.sun.javafx.scene.control.skin.LabelSkin.handleControlPropertyChanged(LabelSkin.java:49)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase.lambda$registerChangeListener$60(BehaviorSkinBase.java:197)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$$Lambda$396/10023963.call(Unknown Source)
at com.sun.javafx.scene.control.MultiplePropertyChangeListenerHandler$1.changed(MultiplePropertyChangeListenerHandler.java:55)
at javafx.beans.value.WeakChangeListener.changed(WeakChangeListener.java:89)
at com.sun.javafx.binding.ExpressionHelper$SingleChange.fireValueChangedEvent(ExpressionHelper.java:182)
at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(ExpressionHelper.java:81)
at javafx.beans.property.ObjectPropertyBase.fireValueChangedEvent(ObjectPropertyBase.java:105)
at javafx.beans.property.ObjectPropertyBase.markInvalid(ObjectPropertyBase.java:112)
at javafx.beans.property.ObjectPropertyBase.set(ObjectPropertyBase.java:145)
at javafx.css.StyleableObjectProperty.set(StyleableObjectProperty.java:82)
at javafx.css.StyleableObjectProperty.applyStyle(StyleableObjectProperty.java:68)
at javafx.scene.CssStyleHelper.resetToInitialValues(CssStyleHelper.java:452)
at javafx.scene.CssStyleHelper.createStyleHelper(CssStyleHelper.java:180)
at javafx.scene.Node.reapplyCss(Node.java:8787)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.reapplyCss(Node.java:8816)
at javafx.scene.Node.impl_processCSS(Node.java:8984)
at javafx.scene.Parent.impl_processCSS(Parent.java:1239)
at javafx.scene.Node.processCSS(Node.java:8860)
at javafx.scene.Node.applyCss(Node.java:8957)
at javafx.scene.Node.impl_processCSS(Node.java:8871)
at com.sun.javafx.scene.control.skin.LabeledSkinBase.updateChildren(LabeledSkinBase.java:586)
at com.sun.javafx.scene.control.skin.LabeledSkinBase.handleControlPropertyChanged(LabeledSkinBase.java:184)
at com.sun.javafx.scene.control.skin.LabelSkin.handleControlPropertyChanged(LabelSkin.java:49)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase.lambda$registerChangeListener$60(BehaviorSkinBase.java:197)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$$Lambda$396/10023963.call(Unknown Source)
at com.sun.javafx.scene.control.MultiplePropertyChangeListenerHandler$1.changed(MultiplePropertyChangeListenerHandler.java:55)
at javafx.beans.value.WeakChangeListener.changed(WeakChangeListener.java:89)
at com.sun.javafx.binding.ExpressionHelper$SingleChange.fireValueChangedEvent(ExpressionHelper.java:182)
at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(ExpressionHelper.java:81)
at javafx.beans.property.ObjectPropertyBase.fireValueChangedEvent(ObjectPropertyBase.java:105)
at javafx.beans.property.ObjectPropertyBase.markInvalid(ObjectPropertyBase.java:112)
at javafx.beans.property.ObjectPropertyBase.set(ObjectPropertyBase.java:145)
at javafx.css.StyleableObjectProperty.set(StyleableObjectProperty.java:82)
at javafx.css.StyleableObjectProperty.applyStyle(StyleableObjectProperty.java:68)