I am running Parallels Desktop for Mac 12.2.0 on Mac OSX Sierra with Windows 10 installed. Since upgrading to Sierra and/or Parallels 12 at the same time I have experienced an issue where apps on the Windows taskbar will open when my cursor moves over them. This happens without clicking on anything and will often result in multiple copies of the same app opening or multiple apps opening, depending on how long my cursor hovered there and how many app icons it moved over. This usually happens when I am using Autocad 18 (also previously with Autocad 16 & 17), but I think it has happened once while doing something else. It seems to happen quite randomly and I can't replicate it if I try.