This is with reference to forms bug 8765486.
In this testcase, we are having a application(forms) which is having 2 items.
One is textItem and other one is Button. On button click, we set some text in
the textItem and we do not transfer the focus to the textItem explicitely.
Now customer is also having some different application(like Notepad)
on top and forms application is behind this notepad. Now customer tries to
click on button directly on Forms application when Notepad is on top of
it(means forms applet is in the background). Now sometimes on this button
click, we get the focus event on the textItem(which is unwarrented) in forms
side which is causing other issue in forms side. We are not expecting the
focus gained event on the textItem while setting different text value there.
When bug reproduces, we see that new text in the textItem is highlighted and
when bug is not reproduced, we see that focus is on the button item.

It happens very occasionally(1 in 50 iterations) in JRE 1.6 update 23(with
the proposed fix of earlier issue). It happens more frequently in JRE 1.5(5/6 in
10 iterations with and without the earlier(GE) fix).