Material Editor Viewport does not display World Position Offset

The preview Viewport in the Material Editor does not correctly render World Position Offset.

It appears that the RenderVelocities pass (which is also drawing the depth for the preview sphere) does not use the WPO, but the Base Pass does.

1. Download the attached test project and open.

2. Observe the sphere "Sphere", and the WPO Material causing the top half to move half it's diameter on the positive-Y axis.

3. Open that Material "/Game/M_WPO"

4. Observe the preview viewport - the WPO does not seem to be deforming the mesh.

On the sphere, where there should be no mesh, is a different flat grey color

Off the sphere, where there should be mesh, it isn't always visible. IE, it is visible top-down, but not from the side.

5. Observe that the shadows are affected by the WPO, but the surface they are projected onto is not.