defaults write com.apple.dock single-app -bool true;killall Dock

[whitecrook]

So I use this command

defaults write com.apple.dock single-app -bool true;killall Dock

(change true to false to undo it)

This makes the mac os show only the app I'm using and hides all others. It's excellent I really like this been using it for years. If you choose to use this, note that right clicking or option clicking or alt tabbing to an app keeps others on screen.

Anyway it seems in Catalina that the finder always seems to be there./persist.

Steps to reproduce.:

1. Open some finder windows.
2. Open a browser.
(finder windows remain in the background)
3. Open another app e.g. messages
(browser hides, message open, but the finder windows remain in the background visible)

This is really annoying.

On Mojave, the finder would also behave the same way as normal apps, i.e it would hide and I'd have to click the finder icon in the dock if I wanted get them back. Anyone noticed this, or got a fix ?

 

[whitecrook]

This is still present in Big sur. It's basically means this feature is broken. I can't use it anymore. No one else even seems to know what I'm talking about. Do you know how maddening it is to click Mail, but finder pops up instead. Or any other app, and finder pops up? It's driven me insane.