As title suggests. I cannot manipulate the music volume by any method save the main volume slider.

Mecha RPG adapted from Lancer tabletop · By
Investigations from yesterday revealed that the music slider literally only affects the title music track, despite all music being in the same bus and ostensibly controlled as a group. I regret working with fmod every time I touch it. So: bug is logged, but I’ve hit a roadblock with it & have asked for help.