I am surprised this isn't in the Known Issues post. I get random times where I just don't spawn. Just happened to me on a second round for no reason.
Happens to me sometimes as well, after I die it counts down time until re spawn, then dosnt spawn me and im sat there with it counting down again lol
This has been happening to me also. Thank you for making a topic about it, very annoying. I don't know if it is related but for me it seemed to happen when I would be team-killed.