========== to reproduce ========
- compile ToolTipTest.java attached to this bug

- run it with appletviewer on Windows 2000 or Windows XP

- when appletviewer with a frame appears, click the button "Click here",
  a child frame appears, make sure it has the focus by clicking on it.
  While this child frame has the focus position mouse cursor over "Click here"
  button without clicking it - the child frame disappears off the screen as the main frame becomes focused.

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