The "Set track durations" page is supposed to show the current track lengths and the track lengths according to the CD TOC. However, if the medium has only a single track (e.g. https://beta.musicbrainz.org/cdtoc/u9beystlZLOGppsAvyXVO82Xtts-/set-durations?medium=481280),
- the current length of that track is shown as "?:??" even where it has a length,
- more tracks than just the one are listed in the comparison.