CONNECT Visibility of menu items in Quick Access Toolbar

Hi,

I'm trying to reproduce a menu from v8i with SubMenuItems and MenuItems in the Quick Access Toolbar of the ribbon.

I need visibility tests for some of these items. For that purpose I have defined three named expressions in the same file as the ribbon definitions.
I tested the expressions with simple buttons inside a simple ribbon group and they worked as intended.
But when I try to use these expressions for my Quick Access Toolbar MenuItems they don't work.

First item in QAT is a splitbutton. Inside this there are only SubMenuItems and MenuItems.

Is this a bug or a featur? Maybe someone could please reproduce this behaviour? Or not? Maybe I'm doing something wrong...

Regards
Stephan