cf. http://musicbrainz.org/edit/14507458

Maybe it's because the release add resulted in a bad edit sequence:

http://musicbrainz.org/edit/14504586 Add release
http://musicbrainz.org/edit/14504587 Add release label
http://musicbrainz.org/edit/14504588 Add medium (with ?:?? track times)
http://musicbrainz.org/edit/14504589 Add Disc ID (but no track times applied in automod)
Missing here is an immediate Set track lengths edit !

It was done one day later by FixTrackLength script modbot in http://musicbrainz.org/edit/14507820 (now daily batch instead of nightly)