problems with Artist.displayFormat

[Alhifi]

(03-03-2022 15:10)stefano_mbp Wrote:  As you can see it works as expected, I think something is wrong in your file, maybe tag version or something else

Looks good, but you used the default separator and did not configure your own. As I wrote before I have sometimes a "&" at the beginning of the composer tag ... maybe the error is there.