First inconsistency: This is from a conversation with no replies. But despite there are no replies it gives you the last reply date. (Anonymous is a made up name if you are wondering) I suggest changing Last Reply Date to Last Message Date. A message is not the same as a reply. Second inconsistency: This is from a popup. Here it says Last message by. All good. Now if you hover it you get this: So it says Last message by and when you hover it, it says Last reply by.