If a tag such as 'album artist' is empty, MusicBee will auto-populate the displayed fields for it with values from 'artist'.
If 'sort composer' is empty, that will also get auto-populated through some formula.
And there are probably a few more.
Personally I don't like that at all
I prefer MusicBee to show what-is-what, and want to be able to easily see and consider the actual contents of a tag.
I'm sure there are reasons or benefits for this behaviour that I am not aware of, but I would think that if users want something like it, it's already easy achievable by means of a virtual tag?
So my wish is to either have this 'auto-filling' mechanism removed, or making a setting available to disable it.