I was trying to add the album "Laguna" by D*Note feat. Beth Hirsch, using a FreeDB import as the starting point. Per the new "Artist Credit" guidelines, I set the album artist to a collaboration between the two artists using "feat." as the connecting word. When I went to the track page, every track had "D*Note feat." as the artist; not sure if this was a FreeDB import artifact or not. There did not seem to be any way to fix this without manually editing the artist for every track separately to be a collaboration.

Once this was done, I was able to get to the Recording page, but clicking "Next>>" from there took me to a page like this:

We found the following artists with the same name already existing in MusicBrainz. If any of these are the artist you intended to use, please select the artist:

(a single radio button, labeled "Add new artist")

(A red error message "Please make a selection" appeared if I attempted to click Next from this page.)

If none of these artists match the artist you intended, you can still create a new artist.
(Followed by "Sort Name:" and "Disambiguation:" boxes).

It is somewhat annoying to reach this point, having done all the work by hand to fix the artist field, and then be unable to proceed to the point of saving without creating a bogus artist that goes against all the new collaboration guidelines. And all I really want to do is tag this new album I bought off the Internet.