Revert encoding URL in the back layer

Author: alterphp

src/Controller/AdminExtensionControllerTrait.php

@@ -37,7 +37,7 @@ function ($name) use ($hiddenFields) {
         $masterRequestUri = \sprintf('%s?%s', \strtok($baseMasterRequestUri, '?'), \http_build_query($queryParameters));
 
         $requestParameters = $this->request->query->all();
-        $requestParameters['referer'] = urlencode($masterRequestUri);
+        $requestParameters['referer'] = $masterRequestUri;
 
         $viewVars = [
             'paginator' => $paginator,