#1925 Fixed "title" field creates empty json objects

dist/swagger-ui.js

@@ -26522,7 +26522,7 @@ SwaggerUi.partials.signature = (function () {
 
       if (schema.$ref) {
         modelName = schema.title || simpleRef(schema.$ref);
-        model = models[modelName];
+        model = models[simpleRef(schema.$ref)];
       } else if (_.isUndefined(name)) {
         modelName = schema.title || 'Inline Model ' + (++inlineModels);
         model = {definition: schema};