Hi there,
many thanks for your nice app!
I had some discussion on the server project (Wouterdek/magic4pc#25) about the position of the TV cursor (which seemingly cannot be turned off) and the mouse pointer. It turned out that I had mouse acceleration at factor 2 which made the two pointers moving at different speed.
I found this a bit unexpected as your code emulates a touchpad and sets absolute positions. But I assume that this has something to do how the mouse acceleration is implemented in the Desktop / X11 window system.
So this is rather not a bug. Maybe this could be documented in the README.md.