Not Spawning on wave?

I had a couple of problems where my character died, and waiting for respawn wave, the respawn wave passes, some have respawn, but I haven't? It occoured to me multiple times, and I think I was either chatting, or free float spectating (when you die, sometime you press space and you get into free float for some reason) but I am not sure if that is causing it. It seems like many others experience it too so I think it is to do with the game code itself.

It also seems to not spawn after a round of game as well.