qdockwidget toggleViewAction bug?

["gisfans gisfans"]

I am trying to use the toggleViewAction in the DockWidget for a 
Checkable menu item in my application. But i noticed that the dock 
window closing/hiding is not completely synchronised with its action. 
When a dock window is closed/hidden, the action still remains checked. 
You will need to uncheck, and check it again to make the dock window 
visible again.

I noticed that this occurs in the mainwindows->dockWidgets example as 
well. Is this a bug or am i using the action incorrectly?

I am using Qt 4.1.0 on a WinXP machine using the default style.