Detach instrument Editor and auto-show plugins

I want to use my other monitors, but there is one annoying thing.
When I detach instrument editor, every time I change instrument it appears on screen.
Some plugins have really slow GUI. Is there a way to prevent them for loading GUI until I press “External Editor” button?

I didnt get this problem with dual monitors. Strange

Show me video. I wanted to see when you click on instrument (in instrument list) nothing appears in deatached window until you press “External Editor” button.

Well, so it’s not really possible?