I haven't seen that, but I did see a spawn bug which was probably also due to lag. A friend who was physically in the same room as me was stuck at the wait screen, in position 1 of 1 in the queue, but on my screen he was standing in the spawn.
After yelling at him to get off the spawn, I tell him "walk forward, OK, now turn left a bit, forward more, now jump!" to guide him over to some certain doom. Meanwhile on his screen he was still waiting to spawn the whole time.