Created Issue: Crash when trying to display a context menu [10731]

Sometimes app crash when I trying to display(by tap and hold) a context menu of listboxItem control:

parameter is incorrect
at MS.Internal.XcpImports.MethodEx(IntPtr ptr, String name, CValue[] cvData)
at MS.Internal.XcpImports.MethodPack(IntPtr objectPtr, String methodName, Object[] rawData)
at MS.Internal.XcpImports.UIElement_TransformToVisual(UIElement element, UIElement visual)
at Microsoft.Phone.Controls.ContextMenu.UpdateContextMenuPlacement()
at Microsoft.Phone.Controls.ContextMenu.OnOpened(RoutedEventArgs e)
at Microsoft.Phone.Controls.ContextMenu.<OpenPopup>b__12(Object s, EventArgs e)
at MS.Internal.CoreInvokeHandler.InvokeEventHandler(Int32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
at MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName)

and

NullReferenceException
at Microsoft.Phone.Controls.ContextMenu.UpdateVisualStates(Boolean useTransitions)
at Microsoft.Phone.Controls.ContextMenu.OnOpened(RoutedEventArgs e)
at Microsoft.Phone.Controls.ContextMenu.<OpenPopup>b__12(Object s, EventArgs e)
at MS.Internal.CoreInvokeHandler.InvokeEventHandler(Int32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
at MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName)


Any ideas why?