FULL PRODUCT VERSION :
java version "1.6.0"
Java(TM) SE Runtime Environment (build 1.6.0-b105)
Java HotSpot(TM) Client VM (build 1.6.0-b105, mixed mode, sharing)

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

EXTRA RELEVANT SYSTEM CONFIGURATION :
I am running 1.6 FCS, but combobox in BugParade didn't let me select it

A DESCRIPTION OF THE PROBLEM :
Calling JMenuItem.setHorizontalAlignment() makes text of item invisible when it's shown in a JPopupMenu.


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run supplied source code.
Minimize the JInternalFrame, then right click on it.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
JMenuItem on JPopupMenu displays its Label
ACTUAL -
Label not visible if setHorizontalAlignment() was called

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
package com.adp.e.client.desktop;

import java.awt.Component;
import java.awt.Dimension;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JInternalFrame;
import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;
import javax.swing.SwingConstants;

public class PopupBug
{

   private static class FrameListener extends MouseAdapter
   {
      private Component m_comp;
      public FrameListener(Component comp)
      {
         m_comp = comp;
      }
      
      public void mouseReleased(MouseEvent e)
      {
         if (e.isPopupTrigger())
         {
            JPopupMenu pm = new JPopupMenu();
            JMenuItem mi = new JMenuItem("First Item");
            // Comment out this line and MenuItem text is visible
            mi.setHorizontalAlignment(SwingConstants.CENTER);
            pm.add(mi);
            pm.show(m_comp, e.getX(), e.getY());
         }
      }
   }
   
   public static void main(String[] args)
   {
      JFrame frame = new JFrame("Popup bug under 1.6");
      JDesktopPane dp = new JDesktopPane();
      frame.setContentPane(dp);
      JInternalFrame iFrame = new JInternalFrame("Right click when minimized", true, true, true, true);
      iFrame.setSize(new Dimension(100, 100));
      iFrame.setVisible(true);
      dp.add(iFrame);
      JComponent di = iFrame.getDesktopIcon();
      for(int i = 0; i < di.getComponentCount(); i++)
      {
         Component curChild = di.getComponent(i);
         if (curChild instanceof JButton)
         {
            curChild.addMouseListener(new FrameListener(curChild));
         }
      }
      frame.setSize(new Dimension(400,200));
      frame.setVisible(true);
   }
}

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
I can get by not calling setHorizontalAlignment(), but thought Sun would want to know about this.

Release Regression From : 5.0u7
The above release value was the last known release where this 
bug was not reproducible. Since then there has been a regression.