Glad that it worked for you. We realised a bit late that mouse was behaving rather oddly inside MenuetOS (at least on my Fedora 24 machine). We were seeing three behaviours: 1) mouse works fine; 2) mouse does not move at all (but you see it); and 3) mouse moves automatically to the right-most border at the start and stays there -- sometimes for ever, sometimes just for a while.

Adding the '-usb -device usb-tablet' to the QEMU command-line gave an impression that it's the cause, by working once, but it quickly reverts to either behaviour 2 or 3 above.