http://musicbrainz.org/release/a90d98c1-5abd-42a2-bd74-e1d7e9c4fe71
Currently, tracklist shows:
1 この涙を君に捧ぐ 4:00
2 主なきその声 4:53
3 少女たちよ NO NAME ver. 4:12
4 この涙を君に捧ぐ（off vocal ver.） 4:00
5 主なきその声（off vocal ver.） 4:53
6 少女たちよ NO NAME ver.（off vocal ver.） 4:09

This is wrong.
Edit history: http://musicbrainz.org/release/a90d98c1-5abd-42a2-bd74-e1d7e9c4fe71/edits
Edit #21711470 - Add medium with ?:?? durations
Edit #21713334 - Edit medium to add durations. Note that my intended edit on track 3 is for "4:36", NOT "4:12" AS CURRENTLY ON THE RELEASE PAGE.

http://musicbrainz.org/release/3a661768-199c-4bc5-9d1b-200d1820081a is the release duplicate. This release also shows track durations despite nothing in the edit history showing edits to fill in the missing durations: http://musicbrainz.org/release/3a661768-199c-4bc5-9d1b-200d1820081a/edits

I see no edit history showing what's filled in the track durations. Any such edits are still pending (with DIFFERENT DATA) and have 3 days til expiration. I set above-normal priority because I believe to me it looks like Musicbrainz data is being corrupted by (somewhat unrelated) edits on different pieces of data. If my pending edits get failed dependencies, it would confirm a severe bug.