Matching files to albums does not consider the disc number. This gives bad results on multi-disc releases, especially compilations where the same tracks or even same track list appears on different mediums (e.g. https://musicbrainz.org/release/a49b7342-f038-380f-80c6-9a7832bbd3fa)

See discussion on https://community.metabrainz.org/t/picard-2-3-beta-1/461345/10