Main menu shortcuts stop working

I notice that when i build a main home screen menu, and add a shortcut to an addon to each menu item, it all works fine.

Although as soon as I add a single sub menu item the main menu shortcuts don’t work any more. The sub menu shortcuts work.

This is the case in Jarvis as well as in Krypton version.

I feel it has to do with a third party addon, and I suspect it to be the script Simplejson, but not sure.

Anyone else experience with this?