FULL PRODUCT VERSION :
java version "1.5.0_06"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)
Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode, sharing)


ADDITIONAL OS VERSION INFORMATION :
Suse Linux 9.3
Linux xitx00ha 2.6.8-24.16-smp #1 SMP Thu Jun 2 12:09:57 UTC 2005 i686 i686 i386 GNU/Linux


A DESCRIPTION OF THE PROBLEM :
This Bug did not occur on one of our windows test systems, only on the linux test systems

Try a focus change with tab. It leads to an endless loop. regardless of using verify or shouldYieldFocus.

public class TestInputVerifyOptionPaneBug {

    public static void main(String[] pArgs) throws Exception {

        final JTextField t1 = new JTextField();
        t1.setInputVerifier(new InputVerifier() {
            public boolean verify(JComponent input) {
                JOptionPane.showMessageDialog(input, "test");
                return true;
            }
        });
        final JTextField t2 = new JTextField();


        JFrame frame = new JFrame();
        frame.getContentPane().add(t1, BorderLayout.NORTH);
        frame.getContentPane().add(t2, BorderLayout.SOUTH);
        frame.setVisible(true);
    }
}

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
see description

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
a focus change to the second textfield

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import javax.swing.JTextField;
import javax.swing.InputVerifier;
import javax.swing.JComponent;
import javax.swing.JOptionPane;
import javax.swing.JFrame;
import java.awt.BorderLayout;

/public class TestInputVerifyOptionPaneBug {

    public static void main(String[] pArgs) throws Exception {

        final JTextField t1 = new JTextField();
        t1.setInputVerifier(new InputVerifier() {
            public boolean verify(JComponent input) {
                JOptionPane.showMessageDialog(input, "test");
                return true;
            }
        });
        final JTextField t2 = new JTextField();


        JFrame frame = new JFrame();
        frame.getContentPane().add(t1, BorderLayout.NORTH);
        frame.getContentPane().add(t2, BorderLayout.SOUTH);
        frame.setVisible(true);
    }
}

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

CUSTOMER SUBMITTED WORKAROUND :
no workaround