Thanks @niente0!
Please @chmac, fix it in next version.
For help other users;
Edit file wp_mail_smtp.php about line 140…
// Set the SMTPSecure value, if set to none, leave this blank
$phpmailer->SMTPSecure = get_option('smtp_ssl') == 'none' ? '' : get_option('smtp_ssl');
//Whether to enable TLS encryption automatically if a server supports it
if ( empty( $phpmailer->SMTPSecure ) ) {
$phpmailer->SMTPAutoTLS = false;
}
Best regards!