From 1d0abca08e1088ca7ed863435d36646cc34bec7c Mon Sep 17 00:00:00 2001
From: =?utf8?q?Tim=20D=C3=BCsterhus?= <duesterhus@woltlab.com>
Date: Fri, 16 Jul 2021 14:08:16 +0200
Subject: [PATCH] Set `$isAtom` to `false` when encoding the email's subject

---
 wcfsetup/install/files/lib/system/email/Email.class.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wcfsetup/install/files/lib/system/email/Email.class.php b/wcfsetup/install/files/lib/system/email/Email.class.php
index a991473a2d..14a8401ad9 100644
--- a/wcfsetup/install/files/lib/system/email/Email.class.php
+++ b/wcfsetup/install/files/lib/system/email/Email.class.php
@@ -527,7 +527,7 @@ class Email
             $headers[] = ['cc', \implode(",\r\n   ", $cc)];
         }
         if ($this->getSubject()) {
-            $headers[] = ['subject', EmailGrammar::encodeQuotedPrintableHeader($this->getSubject())];
+            $headers[] = ['subject', EmailGrammar::encodeQuotedPrintableHeader($this->getSubject(), false)];
         } else {
             throw new \LogicException("Cannot generate message headers, you must specify a subject.");
         }
-- 
2.20.1