While doing some random operations (was trying to add TreeTableView) in SceneBuilder Application , i observed below NPE in windows 7, 64 bit with JDK-9. I am getting this NPE consistently now.I attached the screenshot (SceneGraph-NPE.png) to check the scenegraph components.

Aug 01, 2016 6:23:55 PM com.oracle.javafx.scenebuilder.app.SceneBuilderApp$SceneBuilderUncaughtExceptionHandler uncaughtException
SEVERE: An exception was thrown:
java.lang.NullPointerException
        at com.oracle.javafx.scenebuilder.kit.editor.panel.content.driver.TreeTableViewDesignInfoX.getColumnHeaderBounds(TreeTableViewDesignInfoX.java:89)
        at com.oracle.javafx.scenebuilder.kit.editor.panel.content.driver.handles.TreeTableViewHandles.layoutGrip(TreeTableViewHandles.java:139)
        at com.oracle.javafx.scenebuilder.kit.editor.panel.content.driver.handles.TreeTableViewHandles.layoutDecoration(TreeTableViewHandles.java:84)
        at com.oracle.javafx.scenebuilder.kit.editor.panel.content.AbstractDecoration.rootNodeSceneDidChange(AbstractDecoration.java:215)
        at com.oracle.javafx.scenebuilder.kit.editor.panel.content.AbstractDecoration.lambda$new$0(AbstractDecoration.java:81)
        at com.sun.javafx.binding.ExpressionHelper$SingleChange.fireValueChangedEvent(ExpressionHelper.java:181)
        at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(ExpressionHelper.java:80)
        at javafx.beans.property.ReadOnlyObjectPropertyBase.fireValueChangedEvent(ReadOnlyObjectPropertyBase.java:74)
        at javafx.beans.property.ReadOnlyObjectWrapper.fireValueChangedEvent(ReadOnlyObjectWrapper.java:102)
        at javafx.scene.Node$ReadOnlyObjectWrapperManualFire.fireSuperValueChangedEvent(Node.java:1043)
        at javafx.scene.Node.invalidatedScenes(Node.java:1105)
        at javafx.scene.Node.setScenes(Node.java:1143)
        at javafx.scene.Parent$2.onChanged(Parent.java:391)
        at com.sun.javafx.collections.TrackableObservableList.lambda$new$0(TrackableObservableList.java:45)
        at com.sun.javafx.collections.ListListenerHelper$Generic.fireValueChangedEvent(ListListenerHelper.java:329)
        at com.sun.javafx.collections.ListListenerHelper.fireValueChangedEvent(ListListenerHelper.java:73)
        at javafx.collections.ObservableListBase.fireChange(ObservableListBase.java:233)
        at javafx.collections.ListChangeBuilder.commit(ListChangeBuilder.java:482)
        at javafx.collections.ListChangeBuilder.endChange(ListChangeBuilder.java:541)
        at javafx.collections.ObservableListBase.endChange(ObservableListBase.java:205)
        at javafx.collections.ModifiableObservableListBase.add(ModifiableObservableListBase.java:155)
        at java.util.AbstractList.add(AbstractList.java:109)
        at com.sun.javafx.collections.VetoableListDecorator.add(VetoableListDecorator.java:209)
        at com.oracle.javafx.scenebuilder.kit.editor.panel.content.mode.EditModeController.updateHandles(EditModeController.java:449)
        at com.oracle.javafx.scenebuilder.kit.editor.panel.content.mode.EditModeController.updateHandles(EditModeController.java:384)
        at com.oracle.javafx.scenebuilder.kit.editor.panel.content.mode.EditModeController.editorSelectionDidChange(EditModeController.java:188)
        at com.oracle.javafx.scenebuilder.kit.editor.panel.content.ContentPanelController.editorSelectionDidChange(ContentPanelController.java:789)
        at com.oracle.javafx.scenebuilder.kit.editor.panel.util.AbstractPanelController.lambda$new$5(AbstractPanelController.java:231)
        at com.sun.javafx.binding.ExpressionHelper$Generic.fireValueChangedEvent(ExpressionHelper.java:360)
        at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(ExpressionHelper.java:80)
        at javafx.beans.property.IntegerPropertyBase.fireValueChangedEvent(IntegerPropertyBase.java:107)
        at javafx.beans.property.IntegerPropertyBase.markInvalid(IntegerPropertyBase.java:114)
        at javafx.beans.property.IntegerPropertyBase.set(IntegerPropertyBase.java:148)
        at com.oracle.javafx.scenebuilder.kit.editor.selection.Selection.incrementRevision(Selection.java:506)
        at com.oracle.javafx.scenebuilder.kit.editor.selection.Selection.endUpdate(Selection.java:454)
        at com.oracle.javafx.scenebuilder.kit.editor.job.BatchSelectionJob.execute(BatchSelectionJob.java:69)
        at com.oracle.javafx.scenebuilder.kit.editor.job.reference.UpdateReferencesJob.execute(UpdateReferencesJob.java:78)
        at com.oracle.javafx.scenebuilder.kit.editor.JobManager.executeJob(JobManager.java:193)
        at com.oracle.javafx.scenebuilder.kit.editor.JobManager.push(JobManager.java:82)
        at com.oracle.javafx.scenebuilder.kit.editor.EditorController.performInsert(EditorController.java:1610)
        at com.oracle.javafx.scenebuilder.kit.editor.panel.library.LibraryListCell.handleMouseEvent(LibraryListCell.java:219)
        at com.oracle.javafx.scenebuilder.kit.editor.panel.library.LibraryListCell.lambda$new$0(LibraryListCell.java:91)
        at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
        at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
        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.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
        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.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        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:198)
        at javafx.scene.Scene$ClickGenerator.postProcess(Scene.java:3583)
        at javafx.scene.Scene$ClickGenerator.access$8300(Scene.java:3511)
        at javafx.scene.Scene$MouseHandler.process(Scene.java:3879)
        at javafx.scene.Scene$MouseHandler.access$1300(Scene.java:3598)
        at javafx.scene.Scene.processMouseEvent(Scene.java:1868)
        at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2607)
        at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:382)
        at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:295)
        at java.security.AccessController.doPrivileged(Native Method)
        at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$2(GlassViewEventHandler.java:418)
        at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
        at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:417)
        at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
        at com.sun.glass.ui.View.notifyMouse(View.java:937)
        at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
        at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:189)
        at java.lang.Thread.run(Thread.java:804)