I just upgraded my Windows 7 Pro (64-bit) to Windows 8 Pro (64-bit) and when I right-click on my desktop to change the wallpaper and settings, the wallpaper becomes grey (disappears) and the contextual menu does not show up (the taskbar icons are also slightly blinking the same grey color that the wallpaper changes to). I tried deactivating RainMeter, but the issue still happens with it disabled. I also have disabled my custom HyperDesk theme.
If after I right clicked I click away, the wallpaper doesn't turn back to normal until I click on the taskbar.
Anyone knows what may cause this issue?