1) Starts SB
2) Drop a TabPane
3) Select the left Tab
4) Undo
    => the exception below is raised


java.lang.Exception: EditActionController.canPerform() did break for menu item javafx.scene.control.MenuItem@469c03e1
at com.oracle.javafx.scenebuilder.app.menubar.MenuBarController.handleOnMenuValidation(MenuBarController.java:1008)
at com.oracle.javafx.scenebuilder.app.menubar.MenuBarController.access$700(MenuBarController.java:88)
at com.oracle.javafx.scenebuilder.app.menubar.MenuBarController$17.handle(MenuBarController.java:989)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:204)
at com.sun.javafx.scene.control.GlobalMenuAdapter$MenuItemAdapter.fireValidation(GlobalMenuAdapter.java:193)
at com.sun.javafx.tk.quantum.GlassSystemMenu$6.validate(GlassSystemMenu.java:243)
Caused by: java.lang.ClassCastException: javafx.scene.control.Tab cannot be cast to javafx.scene.Node
at com.oracle.javafx.scenebuilder.kit.editor.job.DuplicateSelectionJob.makeSubJobs(DuplicateSelectionJob.java:102)
at com.oracle.javafx.scenebuilder.kit.editor.job.v2.CompositeJob.getSubJobs(CompositeJob.java:64)
at com.oracle.javafx.scenebuilder.kit.editor.job.v2.CompositeJob.isExecutable(CompositeJob.java:84)
at com.oracle.javafx.scenebuilder.kit.editor.EditorController.canPerformEditAction(EditorController.java:1027)
at com.oracle.javafx.scenebuilder.app.menubar.MenuBarController$EditActionController.canPerform(MenuBarController.java:1404)
at com.oracle.javafx.scenebuilder.app.menubar.MenuBarController.handleOnMenuValidation(MenuBarController.java:1001)
... 12 more