Physics Material Direction Friction

Unity Engine
1

Setup:
1 Plane, 2 Cubes
No Physics Material on the Plane
Both Cubes share the same Physics Material
Both dynamic and static frictions of the Physics Material are set to 0 except on x-axis
The Cube on the right is rotated by -90 degree with respect to y-axis

Expected Outcome:
The Cube on the left slides down the tilted Plane due to 0 friction while the one on the right stays still

Unity 4.6.3f1 Educational Pro
Working as expected

Unity 5.0.0f4 Personal
Both Cubes stay still upon contact with the tilted Plane

Any ideas?

2

For me it’s a bug, I write it on unityanswer :

No answer for the moment, I think we have to report a bug to unity

3

I too have the same issue. I’ve reported it so hopefully something gets done about it.

4

Anisotropic friction is no longer supported in PhysX 3. The second set of friction properties in the material will be removed as they don’t have any effect in Unity 5.