I noticed around the time we began testing GUU31 when I'd send mail from one of my characters to the other the same mail would replicate with no attachment. Now it's doing that with collections, briefings, and mail from my other characters.
I now notice this a recurring bug having gained in intensity, it appears to happen every time I log in on each character. The previous mail notice is there with nothing in it but the event stated. This also applies to broker mail.