Since the last few updates of Hwinfo the tooltips of the problem are not going away when moving the mouse away from Hwinfo window and the tooltips are getting stuck on the dekstop and even in 3d games and other apps.
I've just updated to 7.34 and the issue still exists, Tooltips get stuck on the desktop screen if you don't select a blank area of Hwinfo before moving your mouse away from the Hwinfo window.