Fix so bounces addresses in Sender headers are skipped on Reply-All (#1489011)

CHANGELOG

@@ -1,6 +1,7 @@
 CHANGELOG Roundcube Webmail
 ===========================
 
+- Fix so bounces addresses in Sender headers are skipped on Reply-All (#1489011)
 - Fix bug where serialized strings were truncated in PDO::quote() (#1489142)
 - Fix displaying messages with invalid self-closing HTML tags (#1489137)
 - Fix PHP warning when responding to a message with many Return-Path headers (#1489136)

program/steps/mail/compose.inc

@@ -318,7 +318,8 @@ foreach ($parts as $header) {
         $fvalue .= $v;
       if ($v = $MESSAGE->headers->cc)
         $fvalue .= (!empty($fvalue) ? $separator : '') . $v;
-      if ($v = $MESSAGE->headers->get('Sender', false))
+      // Use Sender header (#1489011)
+      if (($v = $MESSAGE->headers->get('Sender', false)) && strpos($v, '-bounces@') === false)
         $fvalue .= (!empty($fvalue) ? $separator : '') . $v;
 
       // When To: and Reply-To: are the same we add From: address to the list (#1489037)