Is it possible to track capslock raw keydown/up events?

[eugenesvk]

As far as I understood, the key monitor EventMonitor can't track raw key down/up events for modifier keys, it instead tracks modifier key change state (but not keydown/up), which for CapsLock is deficient, e.g., caps key up doesn't change modifier state, so generates no event.
It also seems to be a global deficiency of the underlying Apple framework cacao uses.

Or maybe I've missed something and there is a way to get true raw keyboard events for a cacao app?