There is a huge bug when Group Messaging is disabled in iOS 5. I'm shocked Apple hasn't fixed this yet.Today a friend sent out a text message blast, announcing they got a new phone number. Shortly after, I got text messages from three random people I don't know. I was confused how these people got my number, but then I realized they were replies intended for my friend who sent out the text blast.If you've ever used the Group Messaging feature, it's supposed to thread messages sent to groups, showing the person's name above their reply. But in order to use this...