OPERATING SYSTEM(S):
--------------------
Red Hat Linux 4

FULL JDK VERSION(S):
-------------------
java version "1.6.0_03"
Java(TM) SE Runtime Environment (build 1.6.0_03-b05)
Java HotSpot(TM) Client VM (build 1.6.0_02-b05, mixed mode)

DESCRIPTION:
------------
Height of Choice List becomes bigger and bigger by each operation.
It happens only with MToolkit.

RECREATION STEPS:
-----------------
1. Compile our testcase and launch it:
     $ javac Login.java
     $ AWT_TOOLKIT=MToolkit java Login
2. Open "Font Style" choice component and close it
3. Press down key to change the selection item of the Choice
4. Keep press down key for a while
5. Open Choice component

Results:
There is a big blank space at the end of list.

Expected results:
Choice's list is shown without any change.

TESTCASE:
---------
import java.awt.*;
import java.awt.event.*;

public class Login extends Frame {
    Frame f;
    Panel fontStylePanel;
    Label fontStyle;
    Choice chcUsers1;
    public Login ()
    {
        f=this;
        setLayout(new FlowLayout());
        chcUsers1 = new Choice ();
        chcUsers1.addItem("PLAIN");
        chcUsers1.addItem("BOLD");
        //add (chcUsers1);
        chcUsers1.addItem("ITALIC");
        chcUsers1.addItem("ITALICBOLD");
        FontPanelListener listener = new FontPanelListener();
        chcUsers1.addItemListener(listener);


        fontStylePanel = new Panel();
        fontStylePanel.add(fontStyle=new Label("Font Style:"));
        fontStylePanel.add(chcUsers1);

        f.add(fontStylePanel);
        pack ();

    }
    public static void main (String args[])
    {
        Login login = new Login ();
        login.show ();
    }

    class FontPanelListener implements ItemListener {


        public void itemStateChanged(ItemEvent event) {
            String srcName = ((Component)event.getSource()).getName();
            //setVisible(false);
            int fontStyleval=Font.PLAIN;
            String fontStyletype=chcUsers1.getSelectedItem();
            if ("BOLD".equals(fontStyletype))
                fontStyleval=Font.BOLD;
            else if ("ITALIC".equals(fontStyletype))
                fontStyleval=Font.ITALIC;

            else if ("ITALICBOLD".equals(fontStyletype))
                fontStyleval=(Font.ITALIC | Font.BOLD);
            else
                fontStyleval=Font.PLAIN;


            Font font=new Font("Dialog", fontStyleval, 12);
            fontStyle.setFont(font);
            //setVisible(true);
            f.pack();
        }

    }
}