QMdiSubWindow doesn't obey child widget resize nor minimumSize

When you change the size or the miniumSize of the MdiSubWindow's child, the MdiSubWindow doen't obey the change before you try to resize or move the MdiSubWindow.

In the attached sample, when you click in the button "Hello", the MdiSubWindow's child use resize() and setMinimumSize(), but the MdiSubWindow size doesn't change. If you try to move the window, then it suddenly change.

The MdiSubWindow size must change when the child widget exec resize() or setMinimumSize() or never, but not when you move the window after the change.

Bruno