Multiple genre 8n FLAC show as one genre in RS520 and app

I start the RS520
I also start the app in Android to access the audio player
In the app i go to Music > Classification > Genre
I see that multiple genre entries separated by semicolon ; as tagged in the FLAC files are shown as one genre.
The multiple genres should be separated as per semicolon ; and cataloged in one group
pls. see the screenshot
This strange and not very useful behaviour is also in music > Classification > Artists and also in > Composers

@Ben

I have submitted your request to the software team.
They will review it internally and make additions if necessary.