It’s working for mine at version 3.6 and 3.6.1 also…! Check the following code
$mail = new PHPMailer();
$mail->IsSendmail(); // telling the class to use SendMail transport
$body = $messagehtml;
$body = eregi_replace(“[\]”,”,$body);
$mail->SetFrom($from, $current_user->user_firstname .” “.$current_user->user_lastname);
$mail->AddReplyTo($from, $current_user->user_firstname .” “.$current_user->user_lastname);
$address = $to;
$mail->AddAddress($address, “”);
$mail->Subject = $subject;
$mail->MsgHTML($body);
return $mail->Send();