http://test.musicbrainz.org/release-group/f8834a32-4011-35aa-b199-437c62599367 should just have the full annotation inserted; going to http://test.musicbrainz.org/release-group/f8834a32-4011-35aa-b199-437c62599367/annotation is not the expected Web2.0 behaviour.
old ticket for something like that - http://bugs.musicbrainz.org/ticket/1564
Agreed to fix within 3 months by http://scheduling.ocharles.org.uk and http://chatlogs.musicbrainz.org/musicbrainz-devel/2012/2012-03/2012-03-26.html#T19-36-54-3898
Nikki says she's already done some work here, and will dig it out and hand it over to me.
Here you go https://github.com/96187/musicbrainz-server/commits/annotations
This is in review at http://codereview.musicbrainz.org/r/1833/