The Display icon has disappeared from my Menu Bar and I cannot figure out how to get it back.
The ability to add it to the toolbar has disappeared from System Preferences > Displays
I found an excellent article that contained instructions on how to add it back in this scenario:
For one reason or another, some menulet options remain hidden in System Preferences by default. Interested users can find the full collection in the System folder: Open a Finder window, from the menu bar select Go -> Go to Folder..., and then navigate to /System/Library/CoreServices/Menu Extras.
Some of the extras in this folder are pretty obscure, but one or two might come in handy – like Eject if you use an optical drive, or Ink if you connect a graphics tablet to your Mac, for example. Just double-click any that look useful and they'll be added to the menu bar. They can be removed just as easily using the Command (⌘) key method described above.
When I try this method, the Display icon does indeed show up on the Menu Bar again...
However, when I try to click it, it immediately disappears.
What am I missing?
I'm running Catalina (10.15.6) on a 2015 Macbook Pro.