The Hit Testing example only partially works, the majority of objects fall through the mesh collider the modified DetectedPlaneVisualiser adds to the plane. The reason given in the course that the mesh colliders do not extend to the area where they fall through does not make sense as the colliders are added as soon as the mesh is instantiated and if you place an object in the centre of the mesh sometimes they fall through and sometimes they don't.
The Hit Testing example only partially works, the majority of objects fall through the mesh collider the modified DetectedPlaneVisualiser adds to the plane. The reason given in the course that the mesh colliders do not extend to the area where they fall through does not make sense as the colliders are added as soon as the mesh is instantiated and if you place an object in the centre of the mesh sometimes they fall through and sometimes they don't.