To reproduce:
1) Open com/oracle/javafx/authoring/preferences/Preferences.fxml
2) Select the row #9 in the GridPane ("Default information displayed in hierarchy")
3) Modify -> Grid Pane -> Move Row Above
    => BUG : the row is not moved
    => the exception below is thrown

This pb does happen with SB 1.0.

java.lang.ArrayIndexOutOfBoundsException: 10
at javafx.scene.layout.GridPaneDesignInfo.getCellBounds(GridPaneDesignInfo.java:93)
at com.oracle.javafx.authoring.stage.v2.handles.gridpane.GridPaneMosaic.computeCellOrGapQuad(GridPaneMosaic.java:1040)
at com.oracle.javafx.authoring.stage.v2.handles.gridpane.GridPaneMosaic.addCellAndGaps(GridPaneMosaic.java:827)
at com.oracle.javafx.authoring.stage.v2.handles.gridpane.GridPaneMosaic.<init>(GridPaneMosaic.java:195)
at com.oracle.javafx.authoring.stage.v2.handles.gridpane.GridPaneSelectionHandles.createGridDividerChildren(GridPaneSelectionHandles.java:226)
at com.oracle.javafx.authoring.stage.v2.handles.gridpane.GridPaneSelectionHandles.createChildren(GridPaneSelectionHandles.java:179)
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)