Steps to reproduce (might be transient due to out of date search indexes?)
Create new release
add an existing tracklist, search for "The Lord of the Rings Trilogy"
On page 1, notice how "Lord of the Rings (CD 1) by Bo Hansson" is there three times at the top with the same tracklist. It looks like it's displaying one entry for each release, even though those three releases use the same tracklist ( http://ngs.musicbrainz.org/tracklist/155675 ) Shouldn't it only show the one entry?
More confusingly, on the second page of search results, tracklists for "The Lord of the Rings Trilogy (CD 1) by Howard Shore" are shown twice, even though at time of writing there was only a single release with two discs in the DB? Is this because of the search - each disc is showing up separately there: http://ngs.musicbrainz.org/search?query=lord+of+the+rings+trilogy&type=release&limit=25 ?
The release was quite recently merged in http://ngs.musicbrainz.org/edit/14461474 - which makes me think that perhaps the release editor is using a indexed search for releases in order to display the tracklists so perhaps is out of date, and sees multiple releases where there are now one due to merging?