Convex Mesh collider detects collisions but doesn't send trigger messages

To Reproduce:
1. Open the attached scene & press play.
2. Select the Cube GameObject, which is already intersecting with a NON-convex MeshCollider
3. Disable the MeshCollider component of the Cube gameObject and enable the Box Collider.
4. Trigger messages are sent.
5. Stop play mode. Disable the Box Collider and re-enable the MeshCollider. Untick "trigger" and untick "is Kinematic" for the Cube game object.
6. ENter play mode and move the Cube. It will send Collision Event messages.

Conclusion:
1. The Physx engine is capable of detecting collisions between a non-convex collider and a convex one collider.
2. Collision events are sent when a non-convex collider and a convex colliders collide.
3. Trigger events are NOT sent when a non-convex collider and a convex collider collide.