Mouse in server mode + tablet in Windows 10 Guest cause mouse clicks to warp the pointer to a fixed point in the desktop
When you have a Windows10 guest image with an EvTouch USB Graphics Tablet input device, the mouse will be managed by default in client mode, and everything will work as expected. If you switch to server mode mouse, each click to the mouse buttons will warp the pointer to a fixed point in the desktop: so, it will be impossible to deliver the mouse click events to any arbitrary part of the desktop. If you remove the EvTouch USB Graphics Tablet input device, the mouse will work by default in server mode and will work without flaws: clicks will be ok.
Workaround: To have a fully working mouse in Windows10 guest you have to use the defaults:
- with the EvTouch USB Graphics Tablet input device stick to mouse in client mode
- remove the EvTouch USB Graphics Tablet input device and enjoy the mouse in server mode