I’ve tried twice during the last couple of days to send a personal message to a participant in the dt forum, but I can’t see either of them in my messages list. Is there anything wrong with the sending function or the listing of messages?
Should be working. There are a bunch of different views of PM and in boxes. Are are sure you’re looking at the right one?
I was sure - but not anymore…
Rather to the contrary, due to your comment and @kofa’s follow up test-messaging, I’m certain that I regrettably looked in the wrong view.
I haven’t realized before that the “Latest” view under Personal Profile - Messages only contains threads with replies - and that there is a tag, peculiarly called “Sent”, which displays messages that have been sent but with (yet) no reply.
My bad - sorry for the noise! 
Thought we had solved this, but, no, there regrettably is something strange there, anyhow.
I realize, once again, that Latest should include also sent-only messages, as I initially believed.
Also, that there are a couple of messages I’ve sent that can’t be seen in the Latest list – but that they also come and go also in the Sent list. So there is some snag here, somewhere.
But guys, this is a minor glitch outside dt, so lets cool it for now, and rather enjoy Christmas.
Cheers! 