Merge branch '3.4' into 4.1

* 3.4:
  [Finder] fixed root directory access for ftp/sftp wrapper
  [FWBundle] Throw if PropertyInfo is enabled, but the component isn't installed

Author: fabpot

Finder.php

@@ -727,12 +727,20 @@ private function searchInDirectory(string $dir): \Iterator
     /**
      * Normalizes given directory names by removing trailing slashes.
      *
+     * Excluding: (s)ftp:// wrapper
+     *
      * @param string $dir
      *
      * @return string
      */
     private function normalizeDir($dir)
     {
-        return rtrim($dir, '/'.\DIRECTORY_SEPARATOR);
+        $dir = rtrim($dir, '/'.\DIRECTORY_SEPARATOR);
+
+        if (preg_match('#^s?ftp://#', $dir)) {
+            $dir .= '/';
+        }
+
+        return $dir;
     }
 }