Thread:Extension talk:Translate/Unable to undelete as sysop

I'm sysop on my wiki (2014.2 MLEB with MW 1.24.1) and I'm unable to undelete translations (whereas I'm able to undelete other articles in other namespaces).

Here is the error message: Permission error You do not have permission to view this page's deleted history, for the following reason: The action you have requested is limited to users in the group: Administrators.

Here is my user rights configuration: require_once( "$LANG_EXT/Translate/Translate.php" ); $wgGroupPermissions['user']['translate'] = true; $wgGroupPermissions['user']['translate-messagereview'] = true; $wgGroupPermissions['user']['translate-groupreview'] = true; $wgGroupPermissions['user']['translate-import'] = true; $wgGroupPermissions['sysop']['pagetranslation'] = true; $wgGroupPermissions['sysop']['translate-manage'] = true;

Is that a bug or a misconfiguration?