[BUGFIX] fix mailqueue pid for sg_jobs mails

Classes/Controller/JoblistController.php

@@ -491,7 +491,10 @@ class JoblistController extends ActionController {
 				'sg_jobs',
 				$this->getApplicationMailMarkers($applyData)
 			);
-			$mailService->setPid($GLOBALS['TSFE']->id);
+
+			// set the pageId of the rootpage, otherwise the templates could be duplicated
+			$site = GeneralUtility::makeInstance(SiteFinder::class)->getSiteByPageId($GLOBALS['TSFE']->id);
+			$mailService->setPid($site->getRootPageId());
 
 			// get email from the job contact, fallback is TS settings
 			$contact = NULL;