Application Frame too large for screen; no color dots
I have searched the forums for an answer and found this answer for an application frame workspace that has suddenly become too large for my display screen:
Photoshop's Window menu > Workspace > Reset (Essentials)
(Didn't work)
If that does not work, Edit > Preferences > Interface > UI Scaling: 200/100/Auto Try 100 or 200
In my new Sierra OS update the UI Scaling is grayed out so I cannot adjust it.
Another fix suggested:
Some people turn off the color buttons on their Macs, but that's the one you want.
Unfortunately, I have lost that top bar with the color buttons. It is this way in all screen modes as I cycle through with the f key.
The workspace size is the same regardless of using Essentials, 3D, etc. I cannot move the workspace to my 2nd display nor adjust the width, and the bottom edge is extended off the screen so I can't access it.
Soooo ... any suggestions?
iMac with Sierra 10.12.1

