Floating QDockWidget not re-docked by QMainWindow::restoreState

[zulis]

Floating dock widget problem still exists in Qt 5.0.1 I found a workaround. After state restore do this:

if(yourDockWidget->isFloating())
{
    yourDockWidget->setFloating(true);
}

if(yourDockWidget->isFloating())
{
    yourDockWidget->setFloating(true);
}

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And widget becomes dock able again.