Correct. Assuming you mean any console mixer open AND FOCUSED. (I keep lots of windows open at the same time.)
The KC you are using I don’t think is a global KC. It works only for the project page not the mix consoles.
Did Steinberg ever say this was a bug or by design? I’m guessing it’s a progression or work in progress from C7 where no “zones” existed, other than the inspector, to when they added the Window Zones folder in the KC’s, and then with C9 not only left and right zones, but the lower zone.
I guess what I’m not understanding is why even use the old KC, the one the OP is referring to that doesn’t work for the mix consoles, but instead use the KC’s found in the Windows Zone which will work for all mix consoles and the project page too as long as you have proper focus?