@PiBoSo: in replay mode 9live/spectating and offline) the mouse pointer is shown on screen, but it cannot span the entire screen.
It seems to be constrained to a 4:3 area within the screen area (I'm on 16:9 1920x1080).
This is not a big deal as the replay buttons are all in this area (I guess not by chance), but for a plugin needing to show a mouse pointer spanning the whole screen it is a problem.
I can show my own mouse pointer and I can map the coords to span the whole screen, but I cannot hide the GPB pointer so I only have 2 bad options: 1, live with two mouse pointers, 2 livnig with only GPB mouse pointer (not spanning the whole screen).