How to reproduce:
Open the menu, launch every single application.
What to expect:
Each menu item should launch successfully or show something in the system tray.
In MATE, to perform this test faster:
Ctrl+super_L to quickly open mintMenu
Go on the All category
Don't move your mouse... just keep pressing Ctrl+Super_L to open the menu and to launch new applications
Scroll with the mouse wheel when you need to