Master soundclass is referenced by child sounclass

I have been trying to work out this issue for a while.

I have a master sound-class (Which in project settings is defined as the default sound-class). With this master sound-class, I want to create a child sound-class (Music). when I set this up and then check my references, it seems like the music sound class is referencing the master sound class, which is referencing the music sound-class etc.

This is causing issues as I want to individually control a music class and an SFX class. I cant work out whether i am doing something wrong or it’s a bug. Any help here would be greatly appreciated!!alt text