Look where the Wifi and Bluetooth icons should be! Also all the icons for drives are not there.... WTF!
This issue is definitely not a display preference. Look at the browsers back and forward button. You can clock on the "invisible" icons and they function... like the drop down menu will appear but they remain invisible. All of the drive icons are not appearing. It just happened out of the blue. I also cannot right click certain things, including the dock icons.