if tinymce has not loaded yet, return the initialized value only

src/Umbraco.Web.UI.Client/src/views/propertyeditors/rte/rte.controller.js

@@ -377,7 +377,7 @@ angular.module("umbraco")
                 var unsubscribe = $scope.$on("formSubmitting", function () {
                     //TODO: Here we should parse out the macro rendered content so we can save on a lot of bytes in data xfer
                     // we do parse it out on the server side but would be nice to do that on the client side before as well.
-                    if (tinyMceEditor !== undefined && tinyMceEditor != null) {
+                    if (tinyMceEditor !== undefined && tinyMceEditor != null && !$scope.isLoading) {
                         $scope.model.value = tinyMceEditor.getContent();
                     }
                 });