Keyboard stop working with media bay

I’m noticing when I use media bay and scroll around checking stuff, when I begin dropping files into working project I get problems with the keyb.
the usual commands like rewind, start, stop and usual things that are on the numpad on the keyb doesnt respond anymore.
I have to click play/stop. How come this is happening ? is it a bug or am I missing something here ?
(PC, win10, Cubase 9)

Hi,

Most probably the focus is in the MediaBay part of the window and some functions are assigned to these Key Commands in the MediaBay.