Steps to reproduce:

1. http://musicbrainz.org/release/55ff0247-11e8-371f-83d7-64e102d90861/edit
2. Continue to Tracklist screen
3. Click "Add Disc", then "Existing tracklist" (and notice inconsistent UI capitalization)
4. Search for release "Leaving on a Mayday", artist "Anna Ternheim" and track count 10.
5. Only one track list is found.

If one removes the track count restriction, one can find 2 tracklists with 10 tracks in the results, from these two releases:
http://musicbrainz.org/release/19c247b9-bda4-411f-be55-9420697effb1
http://musicbrainz.org/release/a2ca05c8-65a2-33bc-96bc-c2b60474a3cd