I have a related issue and, to be honnest, I am not sure I understnad the discussion ongoing here (maybe a language issue).
Since a very long time, I am using Yatse as my main interface with Kodi. I like to browse the artists by going in the Music tab listed in the middle of the column on the left. I use it to list the album artists because otherwise I get far too many who listed in some compilation albums (Rock Classic, …). Yesterday, suddenly, this mode only reported 4 artsists instead of 176. If I unclick “album artsits”, I receive all the artists, but it is not what I want to do.
Could you help guiding me to a solution ?