Menu issue in release configuration

[Progger]

Hi,
I dealt with the "tutorial" http://www.cegui.org.uk/wiki/index.php?title=MenuAndPopup and got a strange behavior as my application go down when launching in release configuration.

The problem is located in 'onMouseEntersMenuItem' method, more precisely in 'menuItem->openPopupMenu();'
When I try to move my mouse cursor slowly from a menu item of a menu bar to the now opened sub menu item, the application crashes. This isn't the problem in the debug configuration.
I hope you can help me explaining this odd behavior. Of course I can dispense with the automatically opened sub menus as it's not handled in CEGUI by default, but I think this is a problem that should be solved.

PS: I'm using CEGUI with OgreCEGUIRenderer.