Using Scene Builder, drop e.g. a Button on the stage, and select the Layout tab.
The following Exception appears:

java.lang.ClassCastException: [Ljava.lang.Double; cannot be cast to javafx.collections.ObservableList
    at javafx.scene.shape.Shape.getStrokeDashArray(Shape.java:289)
    at javafx.scene.shape.Shape.updatePGShape(Shape.java:784)
    at javafx.scene.shape.Shape.impl_updatePG(Shape.java:852)
    at javafx.scene.shape.Line.impl_updatePG(Line.java:387)
    at javafx.scene.Node.impl_syncPGNode(Node.java:414)
    at javafx.scene.Scene$ScenePulseListener.synchronizeSceneNodes(Scene.java:1758)
    at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:1858)
    at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:290)
    at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:392)
    at com.sun.javafx.tk.quantum.QuantumToolkit$8.run(QuantumToolkit.java:318)
    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:662)