Index: t3lib/class.t3lib_userauthgroup.php
===================================================================
--- t3lib/class.t3lib_userauthgroup.php	(Revision 10116)
+++ t3lib/class.t3lib_userauthgroup.php	(Arbeitskopie)
@@ -1567,9 +1567,9 @@
 		$fileMountpoints = trim($this->workspaceRec['file_mountpoints']);
 		if ($this->workspace > 0) {
 
-				// no custom filemounts that should serve as filter
+				// no custom filemounts that should serve as filter or user is admin
 				// so all user mountpoints are re-applied
-			if ($fileMountpoints === '') {
+			if ($this->isAdmin() || $fileMountpoints === '') {
 				$this->groupData['filemounts'] = $usersFileMounts;
 			} else {
 					// Fetching all filemounts from the workspace