Originally Posted by eibook
Thank you for your response but since this issue occurs on incoming MMS group messages, I don't think that will fix the issue.
Did you ever find a solution for this? I have a Samsung galaxy s4 doing this exact same thing. Only in group texts. In one to one text messages, it's normal (no subject line at all) but in the group message it shows <Subject: no subject> then the actual text below that. I don't have to download anything, its just annoying and I can't figure out where to turn it off. Any insight would be appreciated.