http://bugs.winehq.org/show_bug.cgi?id=35227
--- Comment #1 from GyB gyebro69@gmail.com --- This regression affects the first installment of the series (Secret Files: Tunguska) and UFO:Extraterrestrials Gold (Steam version) as well, but in a different way. In UFO:ET Gold the mouse pointer is visible when you start the game, but it becomes hidden if you move the mouse pointer out of the screen (virtual desktop) and move it back to the game screen. The mouse is still working but it is invisible.