PIT : Security warning icon is missing if frame is minimized & restoring to normal state

I am launching a frame using -Djava.security.manager. When the frame is visible, i can see the new java security icon is seen on the top right of the frame. I am minimizing & restoring the frame to its normal state. When the frame is brought to normal state. I can see the java security icon is missing. But the border of the frame gets flashing. Java security is the only way to indicate the security banner & its missing. This was working fine in jdk6u10 b29 & b30, but its missing from this 6u11 b01. Hence its a regression.
This may be regression of http://monaco.sfbay/detail.jsf?cr=6732583 or http://monaco.sfbay/detail.jsf?cr=6740941

I have attached the screen shot of the same. I tested this on winxp & windows vista .

Step to reproduce:-
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1) Run the attached testcase using -Djava.security.manager
 When the frame is visible. Observe that java security icon is seen & border of the frame get flashing.
2) Click on the minimize button.
3) Restore the frame. Observe that java security icon is missing. If you see the same then the bug is reproduced.