PM issue

[Nadir]

I've noticed that sometimes, when I reply to a PM I've been sent, the sent message doesn't appear in my 'sent messages' folder, nor does it lift the message to the top of the recipients inbox or doesn't get there at all, I'm unsure as to which.

I can see the message by going to the conversation stack, it's there at the top of those, so I know I sent it.

Is this a known bug?

[Izzie Aditi]

I also had this problem recently but I thought it had something to do with labels. I have a "Follow up" label and once I sent out a reply, the message didn't show up in sent either. *insert panicked Izzie here*
Then upon checking the message I replied to, it just showed up on top with "replied to person X at time x x". Odd

[Vekseid]

Conversation mode is rather wonky : /

[lollipop]

I had similar issues with conversation mode ... once I stopped using it though, no problems at all.