Is this true after using settings > library > library maintenance > clean up library_? My understanding is that this should cause Roon to forget about those files and artists it no longer sees. So no metadata about those should still be there.
Sorry, I’m a bit confused here. By images folder, do you mean the images_1 folder in the DB? I guess that can go up as I think Roon are forever updating their artist images as they find better, high res, ones.
Sorry for the delayed response on this one. I brought this up during my meeting with the technical team and they confirmed that this is expected behavior. Clean Up Library does not include the removal of images.
Deleting albums should ideally remove all data points relating to all entities no longer referenced in the library. I don’t think that happens either, only the album is removed but performers etc. that were added as a result of adding an album remain in the database, albeit not visible until another album is added that involves them.