Was able to reproduce very easily with FPS template. Just copy the above nodes into construction script or event begin play. Remember to set the add static mesh node to block all collision. Test with 2 clients and walk over the mesh.
Keep in mind this is a non replicated aactor with a static mesh component being added into the actor with construction and set. This should be treated as all previous engines have treated it and should cook out into the level no differently than an aactor with a static mesh component manually added into the blueprint or c++ class.