Perhaps I have something missunderstood or my EE 2.1.1 installation is missing something.
I make an entry, click the little button under a custom field. The file manager pops up. I upload an image. The image is shown as a thumbnail. Now the problem. I click on the thumbnail and nothing happens. I think, now the image path should be shown in the custom field? So it were in 1.6.x.
My workaround is to write in the path by hand. But that isn’t elegant.