Looks fine to me. The AcoustID for this track is https://acoustid.org/track/38788d20-21bd-4f92-a4e7-94a6cfcee13d, which is quite consistent with the submitted metadata submitted by various sources. It is linked to two recordings on MusicBrainz. The one Picard identified is https://musicbrainz.org/recording/7bc34292-c2e4-4344-938b-92f1bab61030 , and that indicates that this specific recording is an orchestration of "Mazurka no. 13 in A minor, op. 17 no. 4" by Chopin, orchestrated by Leopold Stokowski and performed by the London Symphony Orchestra. Listening at both a piano performance of the original work (https://www.youtube.com/watch?v=SPUDeuRnak0) and your file confirms that it is indeed an orchestrated version of the original piano work.
In any way, if there would be an issue this is something that needs to be resolved in the database and is not a bug in Picard. MusicBrainz and AcoustID are community maintained databases. Issues with the data are best discussed at https://community.metabrainz.org/ or corrected directly in the database, depending on the issue.
Bug
Normal
Looks fine to me. The AcoustID for this track is https://acoustid.org/track/38788d20-21bd-4f92-a4e7-94a6cfcee13d, which is quite consistent with the submitted metadata submitted by various sources. It is linked to two recordings on MusicBrainz. The one Picard identified is https://musicbrainz.org/recording/7bc34292-c2e4-4344-938b-92f1bab61030 , and that indicates that this specific recording is an orchestration of "Mazurka no. 13 in A minor, op. 17 no. 4" by Chopin, orchestrated by Leopold Stokowski and performed by the London Symphony Orchestra. Listening at both a piano performance of the original work (https://www.youtube.com/watch?v=SPUDeuRnak0) and your file confirms that it is indeed an orchestrated version of the original piano work.
In any way, if there would be an issue this is something that needs to be resolved in the database and is not a bug in Picard. MusicBrainz and AcoustID are community maintained databases. Issues with the data are best discussed at https://community.metabrainz.org/ or corrected directly in the database, depending on the issue.