The popup does not go with the component is removed. For example, I have a JLabel, on which I Popup a menu on right click.
Now I remove this JLabel from its parent, the Popup does not go off.
This problem has regressed on windows with the PIT request of 10th October.

The location of the 10th October PIT build is
/net/sqindia.india.sun.com/export/disk05/swing/tigerbinaries/PIT.10.Oct.2003