Problems with Composer MP3 Tag

Hello
first: many thanks for the great server- it is definitely the best Music server out there...
Problem: I'vo got a large collection with classical music and the composer tag seems not to work/semms not to be found by the server (in over 98%of the cases). I'm jusing win10 and Serviio 1.6.
Thanks in andvantage for any hints

[zip]

what type of file? can you send me an example file to zip@serviio.org

Thanks for answering, I sended an example -file on 5.04, hope you received it.

[zip]

Yes I did. Haven't had time to look into it yet.