[TheLoafOfBread]

If you have icons on 2 monitors and then you disconnect 1, yes icons are everywhere. When you will reconnect the second one, it will restore as it was. I do not know how it is working (or not) on laptops and monitors combinations as I have desktop PC with 2 monitors.

[rekoil]

I'm not so worried about icons, I don't really use the desktop, in fact I actually disable desktop icons on my macOS laptop.

I'm more interested in what happens to app windows when you remove and reconnect displays.