Merge pull request #5667 from cakephp/issue-5666

Only destroy active sessions.

src/Network/Session.php

@@ -509,7 +509,7 @@ class Session
             $this->start();
         }
 
-        if (!$this->_isCli) {
+        if (!$this->_isCli && session_status() === PHP_SESSION_ACTIVE) {
             session_destroy();
         }