[wp-trac] [WordPress Trac] #51885: Extra space in subject line - plugin auto update

[WordPress Trac]

#51885: Extra space in subject line - plugin auto update
--------------------------+------------------------------
 Reporter:  22-7ths       |       Owner:  (none)
     Type:  defect (bug)  |      Status:  closed
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Mail          |     Version:  5.5.3
 Severity:  minor         |  Resolution:  worksforme
 Keywords:                |     Focuses:  administration
--------------------------+------------------------------
Changes (by SirLouen):

 * keywords:  needs-testing =>
 * status:  new => closed
 * resolution:   => worksforme


Comment:

 == Reproduction Report
 === Description
 ❌ This report can't validate that the issue can be reproduced.

 === Environment
 - WordPress: 6.9-alpha-60093-src
 - PHP: 7.4.33
 - Server: nginx/1.29.0
 - Database: mysqli (Server: 8.4.5 / Client: mysqlnd 7.4.33)
 - Browser: Chrome 138.0.0.0
 - OS: Windows 10/11
 - Theme: Twenty Twenty-Five 1.2
 - MU Plugins: None activated
 - Plugins:
   * Micro Email Testing 1.0.0
   * Test Reports 1.2.0
   * WP Crontrol 1.19.1

 === Reproduction Steps
 1. For testing this, I'm using a clean WP, with a Mailpit test server,
 basic PHPMailer configuration (provided in the  bottom).
 2. Using similar environment vars (PHP 7.4 with FPM/FastCGI)
 3. Forced an automatic plugin update to trigger the email
 4. ❌ Result of the email looks as expected (Raw email in the supplemental
 artifacts)

 === Actual Results
 1.  ❌ Error condition is not occurring any more.

 === Additional Notes
 - Given that this report is a little old, and it's difficult to identify
 if the reporter is using a full clean server to reproduce this, I'm going
 to close this ticket for now as `worksforme` (more info below)

 - If reporter is still having the same trouble and believes that can
 provide more detailed reproduction instructions, including, resulting raw
 emails, more detailed information of the WP setup (I recommend installing
 [https://wordpress.org/plugins/test-reports/ Test Report plugin]) and if
 possible all the code that permits sending the email (or if its being sent
 via default `mail` with default server configuration), including, MTA and
 MTA version (for example, postfix 3.10.3) and any MTA relevant configs
 that could help debug this issue.

 === Supplemental Artifacts

 PHPMailer basic config:
 {{{
  add_action('phpmailer_init', function ($phpmailer) {
         $phpmailer->isSMTP();
         $phpmailer->SMTPAuth = false;
         $phpmailer->SMTPSecure = '';
         $phpmailer->SMTPAutoTLS = false;
         $phpmailer->Host = 'mailpit';
         $phpmailer->Port = '1025';
 });
 }}}

 Resulting Email for Automatic Plugin Updating:
 {{{
 Return-Path: <test at example.com>
 Received: from localhost (wordpress-develop-php-1.wordpress-
 develop_wpdevnet. [172.18.0.2])
         by 0b50bb1618fc (Mailpit) with SMTP
         for <test at example.com>; Mon, 14 Jul 2025 19:31:49 +0000 (UTC)
 Date: Mon, 14 Jul 2025 19:31:49 +0000
 To: test at example.com
 From: test <test at example.com>
 Subject: [WordPress Develop] Some plugins were automatically updated
 Message-ID: <DDZDX2e8I5wCjvyvi5uMOJe5hcGc4qjNYaOcKX8iH4 at localhost>
 X-Mailer: PHPMailer 6.9.3 (https://github.com/PHPMailer/PHPMailer)
 MIME-Version: 1.0
 Content-Type: text/plain; charset=UTF-8

 Howdy! Some plugins have automatically updated to their latest versions on
 your site at http://localhost:8889. No further action is needed on your
 part.


 These plugins are now up-to-date:
 - Hello Dolly (from version 1.7.0 to 1.7.2) :
 https://wordpress.org/plugins/hello-dolly/


 If you experience any issues or need support, the volunteers in the
 WordPress.org support forums may be able to help.
 https://wordpress.org/support/forums/

 The WordPress Team
 }}}

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/51885#comment:5>
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