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 :
Ubuntu 6.10

Linux fkj-desktop 2.6.17-11-generic #2 SMP Thu Feb 1 19:52:28 UTC 2007 i686 GNU/Linux


EXTRA RELEVANT SYSTEM CONFIGURATION :
Using GNOME desktop environment version 2.16

A DESCRIPTION OF THE PROBLEM :
The problem happens when I set JFrame.setDefaultLookAndFeelDecorated() and JDialog.setDefaultLookAndFeelDecorated() true and affects JOptionPane and JDialog. I've observed the following behaviors when a dialog is being showed:
- If I click anywhere inside the application that called the dialog it goes background.
- If I click on the window list panel to make my application visible again(it was minimized or I clicked on any other application) the dialog goes background.
- If click on any other application to make visible and just minimize it to make my application visible, the dialog is still visible.
- Whenever the dialog goes background it doesn't loses focus and I have to shift between the opened windows(ALT + TAB) to make it visible again.

If I set only JDialog.setDefaultLookAndFeelDecorated() true it works correctly.

I also tested on Windows XP SP2, this bug doesn't happen there.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
- Create a JFrame
- Set JFrame.setDefaultLookAndFeelDecorated() and JDialog.setDefaultLookAndFeelDecorated() true
- From the JFrame call JOptionPane.showMessageDialog(null, "test")

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Behave the same way that when only JDialog.setDefaultLookAndFeelDecorated() is true
ACTUAL -
The dialogs go background. Its necessary to shift between the windows(ALT + TAB) to make them visible again.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import java.awt.Dimension;

public class Test extends JFrame
{
public Test()
{
super();
initialize();
}

private void initialize()
{
setSize(new Dimension(600, 400));
setTitle("Test");
}

public static void main(String[] args)
{
JFrame.setDefaultLookAndFeelDecorated(true);
JDialog.setDefaultLookAndFeelDecorated(true);
new Test().setVisible(true);
JOptionPane.showMessageDialog(null, "test");
}
}
---------- END SOURCE ----------