Transmission from directional light on thick-object mode is rendered even when object is in shadow.

Steps to reproduce : 

• Open attached project
• Open Scene "Assets\Scenes\SampleScene.unity"
• Look at the 3 spheres in the scene:

Expected:
All spheres should render black.

 

Result:
Spheres with material using the "Subsurface Scattering" and "Translucent" mode render transmission from the directional light, even if they are in a shadowed area.