It really should work. Since ages. Care
to elaborate where copy and paste doesn't
work in Gnome?
Copy something in one app, close it, then try pasting in another app -- sometimes it works, sometimes it doesn't, depending on the app or on its mood, and this behavior has been going on for ages, up until Ubuntu 10.10, which I'm using.
I'm happy to find that Gnome 3 has usability improvements. I'll definitely try it out.
I don't know what I'm confused about, and I don't really care about technical details -- the behavior of copy/paste has been inconsistent to me.
Reading that article, if it really is the reason for what is happening, it kind of makes sense, but that's no comfort to me when I'm losing my selection because I have closed the origin; behavior that isn't even consistent across apps.
I'm happy to find that Gnome 3 has usability improvements. I'll definitely try it out.