I had this about a week ago. It happened when I was killed NE of Sar near the Sar / Turukhansk server border. But in my case, after I had used Ctrl-d, I revived in NU, this even though I had previously revived in both Sar and Turukhansk to prove my DNA was there.
The devs have just closed my Helpdesk call, saying they could not reproduce it, but have added some extra logging, so if it happens to anyone else, please tell them.