I've been running more tests and the current behavior is really weird. It does work the conversation thread but it only lists the received messages. So let's say i'm having a conversation with two people:
-msg received from #1
-I reply
-msg received from #2
-I reply
-msg received from #3
-I reply
Usually the thred would have six emails, including my answers. But Mail is only displaying the received emails, so it only displays 3 messages.
Is this the expected behavior?