Setting custom Mesh Bounds is not updating the Center & Extents

I’m trying to set the bounds of a mesh to a tunable value at runtime.
However the bounds are not changing at all.

My Mesh is Read/Write.

I am testing the culling with a occlusion culled camera.

I’m on Unity3d 5.5.0p4

    void Update()
    {
        SkinnedMeshRenderer SMR = GetComponent<SkinnedMeshRenderer>();
        Debug.Log("Old Bounds " + SMR.bounds.ToString());
        Bounds B = new Bounds(center, extents * 2f);
        SMR.sharedMesh.bounds = B;
        Debug.Log("New Bounds " + SMR.bounds.ToString());
    }

I can edit the Center and Extents in the Inspector, but I want to be able to set the bounds at Runtime so I can guarantee the meshes have a consistent Bounds.

It’s like the Setter function is broken.

Has anyone else run into this problem, or know a fix? Do I need to set these values in a different step before Update or LateUpdate?

smr.localBounds = new Bounds…

Bounds are typically derived from the center/extents. The Bounds variable is really just a simplified wrapper for the AABB that surrounds the more complex collider. So, you’d have to change center/extents to get the bounds to work. I have no idea why the set accessor is even public, to be honest.