NullPointerException in JFileChooser after navigating to empty folder

FULL PRODUCT VERSION :
java version "1.6.0_01"
Java(TM) SE Runtime Environment (build 1.6.0_01-b06)
Java HotSpot(TM) Client VM (build 1.6.0_01-b06, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
When using the JFileChooser's Save dialog with the WindowsLookAndFeel UI, any action following keyboard navigation to an empty folder will produce a NullPointerException.

This bug occurs always in the following work flow:
- create a New Folder
- type a name for the folder and press enter
- press enter again to navigate into the folder


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
- compile the attached source
- run Bug under java 1.6 on Windows XP
- in the Save dialog, select an empty folder, then press enter
- click to focus the File Name field

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The operation should complete without error.
ACTUAL -
A NullPointerException is thrown. Also, after navigating into the empty folder, the "Open" button text should have reverted to "Save", but it does not until after forcing the exception.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Exception occurred during event dispatching:
java.lang.NullPointerException
        at javax.swing.JComponent.repaint(JComponent.java:4728)
        at sun.swing.FilePane$2.repaintListSelection(FilePane.java:114)
        at sun.swing.FilePane$2.repaintSelection(FilePane.java:104)
        at sun.swing.FilePane$2.focusLost(FilePane.java:99)
        at java.awt.AWTEventMulticaster.focusLost(AWTEventMulticaster.java:213)
        at java.awt.Component.processFocusEvent(Component.java:5930)
        at java.awt.Component.processEvent(Component.java:5794)
        at java.awt.Container.processEvent(Container.java:2058)
        at java.awt.Component.dispatchEventImpl(Component.java:4410)
        at java.awt.Container.dispatchEventImpl(Container.java:2116)
        at java.awt.Component.dispatchEvent(Component.java:4240)
        at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.ja
va:1848)
        at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeybo
ardFocusManager.java:878)
        at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFoc
usManager.java:551)
        at java.awt.Component.dispatchEventImpl(Component.java:4282)
        at java.awt.Container.dispatchEventImpl(Container.java:2116)
        at java.awt.Component.dispatchEvent(Component.java:4240)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThre
ad.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.
java:183)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.
java:177)
        at java.awt.Dialog$1.run(Dialog.java:1039)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThre
ad.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.
java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre
ad.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)

        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)

        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import javax.swing.JFileChooser;
import javax.swing.UIManager;

public class Bug
{
public static void main(String[] args) throws Exception
{
UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
JFileChooser jfc = new JFileChooser();
jfc.showSaveDialog(null);
}
}
---------- END SOURCE ----------