The visibility of Dialogs with respect to their parent Frames is inconsistent on
win32 vs. Solaris.
On win32, if a Frame is hidden which has currently showing dialogs, the dialogs
remain visible.
On Solaris, if a Frame is hidden which has currently showing dialogs, the
dialogs are automatically hidden.

This can be seen running the JCK test: EventTest2

Choose "Dialog" from the choice.
Click on the "Dialog" button to bring up the dialog from the new Frame
Choose "Frame" from the choice.
--> here you'll notice that on win32, the dialog remains, on Solaris, is doesn't.

The spec needs to be nailed down on what the proper behavior is and one of
the platforms should be fixed accordingly!