Originally Posted by Mike Halloran
The Menu Bar migrates to the active monitor that you have clicked on, Primary or Sides.
Right, I do recall this. I don't normally use multiple monitors so it slipped my mind. macOS Tahoe doesn't do this anymore though.

Regardless, the presence of the ghost/floating menubar in older versions doesn't actually designate a monitor as primary vs secondary, and this still needs to be done manually following the steps I posted above.


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