I enabled a hint in TSimpleGraph.
When I move the cursor to the component and when I wait
a moment it appears as usual (but with soft shadow).
When I wait until timeout is reached it disappear completly
inlusive the shadow.
But when I do not wait and move the cursor off the component
the hint disappear but not it's shadow. I can even move the app
under the shadow. It even display over the desktop background.