modules/controls/src/main/java/com/sun/javafx/scene/control/DatePickerContent.java

@@ -66,10 +66,11 @@
 
 import com.sun.javafx.scene.control.skin.resources.ControlResources;
 import com.sun.javafx.scene.traversal.Direction;
 
 import static com.sun.javafx.PlatformUtil.*;
+import com.sun.javafx.scene.NodeHelper;
 
 /**
  * The full content for the DatePicker popup. This class could
  * probably be used more or less as-is with an embeddable type of date
  * picker that doesn't use a popup.

@@ -167,11 +168,11 @@
         final WeakChangeListener<Node> weakFocusOwnerListener =
             new WeakChangeListener<Node>((ov2, oldFocusOwner, newFocusOwner) -> {
                 if (newFocusOwner == gridPane) {
                     if (oldFocusOwner instanceof DateCell) {
                         // Backwards traversal, skip gridPane.
-                        gridPane.impl_traverse(Direction.PREVIOUS);
+                        NodeHelper.traverse(gridPane, Direction.PREVIOUS);
                     } else {
                         // Forwards traversal, pass focus to day cell.
                         if (lastFocusedDayCell != null) {
                             Platform.runLater(() -> {
                                 lastFocusedDayCell.requestFocus();