icon for the start button (I'm using the metro icon) sometimes jumps off the taskbar and sits just above it. the icon still changes shape as though I am hovering my pointer over it whether I am actually hovering over the icon or hovering where th icon is supposed to be. as soon as I click on it it jumps back to its proper location.
bug is difficult to replicate, but seems it might only occur after I have used the windows key to open the start (classic shell) menu.
I am using Windows 8.