FULL PRODUCT VERSION :
1.4.2_11, 5.0_06 and 6.0_78

ADDITIONAL OS VERSION INFORMATION :
WinXP service pack 2

A DESCRIPTION OF THE PROBLEM :
Insert the text "[Customer}" to a DefaultStyledDocument and set the paragraph to TextAttribute.RUN_DIRECTION_RTL.

The text is displayed as "}Customer[" while "{Customer]" is expected. The '{' and ']' should be reversed in RTL.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the attached source codes

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The JTextPane should display the "[Customer}" as "{Customer]" in RTL
ACTUAL -
The text is displayed as "}Customer["

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
public class RTLTest extends JFrame
{
    JTextPane textPane;
    StyledDocument styledDoc;

    public RTLTest ()
    {
        // some initial setup
        super ("TextComponentDemo");

        // Create the document for the text area.
        styledDoc = new DefaultStyledDocument ();

        // Create the text pane and configure it.
        textPane = new JTextPane (styledDoc); // All right! No 60's jokes.
        textPane.setMargin (new Insets (5, 5, 5, 5));
        JScrollPane scrollPane = new JScrollPane (textPane);
        textPane.setDragEnabled (true);
        scrollPane.setPreferredSize (new Dimension (200, 200));
        // Create the text area for the status log and configure it.
        setContentPane (textPane);
        // Put the initial text into the text pane.
        initDocument ();
    }

    protected void initDocument ()
    {
        try
        {
            SimpleAttributeSet paragraphAttributes = new SimpleAttributeSet ();
            SimpleAttributeSet characterAttributes = new SimpleAttributeSet ();
            StyleConstants.setFontFamily (characterAttributes, "SansSerif");
            StyleConstants.setFontSize (characterAttributes, 16);
            paragraphAttributes.addAttribute (TextAttribute.RUN_DIRECTION, TextAttribute.RUN_DIRECTION_LTR);
            int index = styledDoc.getLength ();
            styledDoc.insertString (index, "\n[\u062a\u0641\u0627\u062d}", characterAttributes);
            index = styledDoc.getLength ();
            styledDoc.insertString (index, "\n[Customer}", characterAttributes);
            paragraphAttributes.addAttribute (TextAttribute.RUN_DIRECTION, TextAttribute.RUN_DIRECTION_RTL);
            styledDoc.setParagraphAttributes (index, styledDoc.getLength () + 1, paragraphAttributes, false);
        }
        catch (BadLocationException e)
        {
            System.err.println ("Couldn't insert initial text.");
        }
    }

    /**
     * TODO Create Javadoc.
     *
     * @param args
     */
    public static void main (String[] args)
    {
        final RTLTest frame = new RTLTest ();
        frame.addWindowListener (new WindowAdapter ()
        {
            public void windowClosing (WindowEvent e)
            {
                System.exit (0);

            }

            public void windowActivated (WindowEvent e)
            {
                frame.textPane.requestFocus ();
            }
        });
        frame.pack ();
        frame.setVisible (true);
    }

}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
No workaround