MAGETWO-35043: Tabs widget does not initialize sometimes on Product Creation page

 - Delay until DOMContentLoaded for initializing options in Suggest Widget.

lib/web/mage/backend/suggest.js

@@ -811,15 +811,19 @@
          * @private
          */
         _renderMultiselect: function () {
+            var that = this;
             this.element.wrap(this.options.multiSuggestWrapper);
             this.elementWrapper = this.element.closest('[data-role="parent-choice-element"]');
-            this._getOptions().each($.proxy(function (i, option) {
-                option = $(option);
-                this._createOption({
-                    id: option.val(),
-                    label: option.text()
-                });
-            }, this));
+            $(function () {
+                that._getOptions()
+                    .each(function (i, option) {
+                        option = $(option);
+                        that._createOption({
+                            id: option.val(),
+                            label: option.text()
+                        });
+                    });
+            });
         },
 
         /**