Thank you for adding that. I have been presuming that this only occurs when the group message originates from an iPhone. Since you have the same issue with two Android's, maybe it's the receiving phone that matters.
BTW, since the latest update to the app, Message+ now crashes repeatedly when trying to download a group message. I have to delete the thread to make it stable. It seems like this should be something that works. Anyone have any suggestions on alternative apps for SMS/MMS messaging?