As you know, but for the benefit of the developer, the Bravo doesn’t have any real detents in the sense of it being part of the lever’s axis, it’s just a “gate” before going into the button section of the lever movement range.
I don’t have the Mu-2 but my understanding is the “detent” described in the documentation assumes an axis with a detent in the range of the axis, as some more “professional” hardware does.