Moving the System menu breaks the screensaver kcontrol module

Binary package hint: kmenuedit

If the default KDE System menu is moved to a sub-menu, the screensaver module in kcontrol is no longer able to load the list of screensavers. For example a menu like so will break the screensavers:

Full Menu
     + Development
     + Graphics
     + Internet
     + System
Home
Add/Remove Packages
...

The problem seems to be because KDE relies on having the (hidden) screensaver menu at the menu path System/ScreenSavers but kmenuedit moves the entire System menu without preserving the Screensaver path. According to http://docs.kde.org/development/en/kdebase/userguide/kde-menu.html#essential-menus the ScreenSavers sub-menu is "essential".

I've been able to edit my menu by hand (in ~/.config/menus/applications-kmenuedit.menu) in order to work around this issue. Instead of using <Move> tags to change the location of the System menu, I create a *copy* of it by repeating its definition in a new sub-menu and then applying a <Delete/> element to the root System menu. The screensaver module seems to be tolerant to this change.

The original System menu definition can be found in /etc/xdg/menus/kde-applications.menu

I can post example application-kmenuedit.menu files that demonstrate the problem, if required.