Today, on oldgits.co.uk, on TE-Station, playing as allies, semiauto.
IIRC ~50/64 players in game at initial spawn, filled up quite fast to 64/64 but not sure if it was full at the time of this glitch occurrence.
Spawned at initial allies spawn point, no problems. Got killed. Spawned on spawnpoint 1 (outside in track area). Fell through map. Died. Spawned again on spawnpoint 1. Fell through map. Died.
Got bored, selected spawnpoint 2, did not fall through map. (Died afterwards, but on enemy fire, not due to falling through stinking fascist weakly acausal D2-brane boundary condition...)
EDIT: Drop was fast. On 2nd drop, thought of taking snapshot, F12 was only Planck's length away, but no joy...