I was writing a post asking why the option “Submit AcousticBrainz features” was greyed out, until I finally found you can only submit them from the cluster panel (left or middle panel), and not from the release panel (right panel). So my new question is: why can’t AcousticBrainz features be submitted from the release panel? It’s rather confusing and seems a bit random to me, and isn’t it it more useful to have AcousticBrainz features linked to MBIDs? You probably won’t have the MBIDs when the files haven’t been matched or tagged yet.
Running Picard 2.7.0 beta 1