[TASK] Fixed a bug with session and template blacklisting

Classes/Controller/MailController.php

@@ -118,7 +118,11 @@ class MailController extends ActionController {
 		if ($parameters['selectedTemplate'] === NULL || $parameters['selectedTemplate'] === '') {
 			if (
 				$this->session->getDataByKey('selectedTemplate') !== NULL &&
-				$this->session->getDataByKey('selectedExtension') !== NULL
+				$this->session->getDataByKey('selectedExtension') !== NULL &&
+				!MailTemplateService::isTemplateBlacklisted(
+					$this->session->getDataByKey('selectedExtension'), $this->session->getDataByKey('selectedTemplate'),
+					$pid
+				)
 			) {
 				$parameters['selectedTemplate'] = $this->session->getDataByKey('selectedTemplate');
 				$parameters['selectedExtension'] = $this->session->getDataByKey('selectedExtension');