Merge pull request #27493 from owncloud/stable9.1-backport_sharing_au…

…tocomplete_inconsitency

#27224 Backport Stable 9.1 Sharing autocomplete inconsistency

core/ajax/share.php

@@ -214,7 +214,7 @@
 				$cm = OC::$server->getContactsManager();
 
 				$userEnumerationAllowed = OC::$server->getConfig()
-					->getAppValue('core', 'shareapi_allow_share_dialog_user_enumeration', 'no') == 'yes';
+					->getAppValue('core', 'shareapi_allow_share_dialog_user_enumeration', 'yes') == 'yes';
 
 				if (!is_null($cm) && $cm->isEnabled() && $userEnumerationAllowed) {
 					$contacts = $cm->search((string)$_GET['search'], array('FN', 'EMAIL'));