PIT : AWT components are invisible for a while after frame is moved & menu items are visible

I have a JFrame, which contains JScrollPane. The JScrollPane contains swingbutton & few AWT components. The JFrame contains menu. When the frame is visible , i move the frame to center of the screen & press F10, when the menu items are visible , the awt components are invisible. Once the menuitem is close, the AWT componets are visible. Moving the frame & openning the menu is one of the most common scenario in gui.

Step to reproduced:-
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1) Run the attached testcase.
2) when the frame is visible. Move the frame to center or any other location on the screen.
3) Press F10 or Click on the menu, so that menu item can be seen.
4) Observe that AWT Components are invisible or not rendered correctly. If you see the same then the bug is reproduced.

I tested this on 6u12 pit b01 on windows vista home premium. I have attached the screen shot .