Issue #3278391: Convert relative paths to be absolute paths not working for CSS

src/EventSubscriber/ResponseSubscriber.php

@@ -89,7 +89,7 @@ class ResponseSubscriber implements EventSubscriberInterface {
       return;
     }
     $content = $response->getContent();
-    $pattern = '/(<script src="|url\("|rel="stylesheet" href=")(\/[a-zA-Z0-0].*")/';
+    $pattern = '/(<script src="|url\("|rel="stylesheet" .*href=")(\/[a-zA-Z0-0].*")/';
     $response->setContent(preg_replace_callback($pattern, [$this, 'forceAbsolutePathsCallback'], $content));
 
   }