Photoshop CC 2017 Version 2017 1.0 Black window conundrum!
Ok I have upgraded my Photoshop CC 2017 version 2017 1.0 I am operating the latest Mac OS on my iMac. Now every now and again. At least twice a day. When i jump over to Lightroom or any other program then return to Photoshop. All my working windows are Black, All the Pallettes are gone and the Menu bar is gone. Nothing i do brings it back to normal. Opening a new file results in a Black window, Nothing fixes this except closing the program and restarting it. Interestingly, i can still save an image but can't see it tor the progress bar. PLEASE HELP!
Below are screen captures of my problem.

