1) drop a VBox,
2) type cmd-k on the vbox
3) DnD a TableView into the ContentView:

java.lang.NullPointerException
at com.oracle.javafx.authoring.stage.v2.handles.TableViewSelectionHandles.addColumnResizeGrip(TableViewSelectionHandles.java:103)
at com.oracle.javafx.authoring.stage.v2.handles.TableViewSelectionHandles.createResizeGripChildren(TableViewSelectionHandles.java:78)
at com.oracle.javafx.authoring.stage.v2.handles.TableViewSelectionHandles.createChildren(TableViewSelectionHandles.java:66)
at com.oracle.javafx.authoring.stage.v2.handles.GenericSelectionHandles.update(GenericSelectionHandles.java:39)
at com.oracle.javafx.authoring.stage.v2.handles.TrackerV5.updateNow(TrackerV5.java:341)
at com.oracle.javafx.authoring.stage.v2.handles.TrackerV5.access$200(TrackerV5.java:30)
at com.oracle.javafx.authoring.stage.v2.handles.TrackerV5$4.run(TrackerV5.java:93)
at com.oracle.javafx.authoring.util.Utils$NextFrameTimer.handle(Utils.java:517)
at com.sun.scenario.animation.AbstractMasterTimer.timePulseImpl(AbstractMasterTimer.java:376)
at com.sun.scenario.animation.AbstractMasterTimer$MainLoop.run(AbstractMasterTimer.java:289)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:456)
at com.sun.javafx.tk.quantum.QuantumToolkit$9.run(QuantumToolkit.java:329)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:76)