jit shared child display errors

HTML

<script src="https://raw.github.com/theSociableme/jsfiddlefiles/master/jit.js"></script>
<div id="infovis" style="width:500px;height:500px;"></div>

JavaScript

/*
var json = {
    id: 0,
    name: "Department of Employment & Economic Development",
    children: [{
        "id": 1,
        "name": "JOBZ App User Access",
        "children": [{
            "id": 3,
            "name": "MS SQL DB License",
            "children": [{
                "id": 4,
                "name": "Linux Physical",
                "children": [{
                    "id": 6,
                    "name": "Primary Site",
                    "children": []}]}]}]},
    {
        "id": 2,
        "name": "Voice Services",
        "children": [{
            "id": 3,
            "name": "MS SQL DB License",
            "children": [{
                "id": 4,
                "name": "Linux Physical",
                "children": [{
                    "id": 6,
                    "name": "Primary Site",
                    "children": []}]}]}]}]
};
*/

var json = {
  "@context": {
    "owl": "http://www.w3.org/2002/07/owl#",
    "rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
    "rdfs": "http://www.w3.org/2000/01/rdf-schema#",
    "xsd": "http://www.w3.org/2001/XMLSchema#"
  },
  "@graph": [
    {
      "@id": "http://protege.stanford.edu/plugins/owl/owl-library/koala.owl#Parent",
      "@type": "owl:Class",
      "owl:equivalentClass": {
        "@id": "_:N1ff0ed51b57742039b83b97d0a4efe4f"
      },
      "rdfs:subClassOf": {
        "@id": "http://protege.stanford.edu/plugins/owl/owl-library/koala.owl#Animal"
      }
    },
    {
      "@id": "_:N12c8cbf206ce42bb89a8945ff1e4fbfb",
      "@type": "owl:Restriction",
      "owl:minCardinality": {
        "@type": "xsd:int",
        "@value": "1"
      },
      "owl:onProperty": {
        "@id": "http://protege.stanford.edu/plugins/owl/owl-library/koala.owl#hasHabitat"
      }
    },
    {
      "@id": "_:Ned129410f67442f1b6a1533be39e0b83",
      "@type": "owl:Restriction",
      "owl:hasValue": true,
      "owl:onProperty": {
        "@id":...