register array after rendering

jsonform/gadget_json_generated_form_child.js

@@ -676,6 +676,7 @@
         // XXX update on every add/delete item
         // input.hidden = maxItems !== undefined && json_document.length >= maxItems;
         div_input.appendChild(input);
+        gadget.props.arrays[path] = div_input;
       });
   }
 
@@ -870,7 +871,6 @@
         first_path + '/',
         schema_path
       );
-      gadget.props.arrays[first_path +  '/'] = div;
     }
 
     if (!input && type === "object") {