I have a Cocoa application. In the View menu, the system adds an Enter Full Screen menu item. In other applications I see that this menu item has the keyboard shortcut ^⌘F. However in my application this keyboard shortcut is not shown in the menu and unsurprisingly this key combination does not enter full screen.
Interestingly, this keyboard shortcut, although shown in other applications, does not work.
How do I debug and/or fix this?