In Unity, when using Bone Flow, the behavior where some bones do not inherit scaling while others do is related to the transform inheritance settings of the bones. In Spine, you can control whether a bone inherits transformations such as scale from its parent by adjusting the "Inherit Scale" property. If "Inherit Scale" is unchecked for a bone, it will not inherit the scaling transformations from its parent, which can lead to the behavior you are observing. This is not a feature of the Bone Flow component itself but rather a setting within the Spine skeleton setup that affects how bones behave in Unity.
For more information on transform inheritance, you can refer to the Spine user guide: Transform inheritance.
