There's nothing we can do on our side, unless we would reduce the maximum number of items to 9, which will make the menu a bit more cumbersome to use for FSX users or P3D users that still haven't updated to 3.2.
It's a P3D 3.2 problem that will affect every 3rd party app with a menu, so we would rather have LM fix it (it has been already discussed on their forum, so they are aware of the issue), rather changing the app, only to have to change it again when they'll fix it.
You can still use the mouse, in the meantime.