i dont understand why this is happening but it seems like my corpse disappears immediately right after dying so friendly medics just run past my (nonexisting) body and cannot revive me. i dont think it's because they are bad medics and dont revive since other dead allies next to me are revived as well (i can tell from the spawnscreen map) am i the only one with this problem or is this a common ingame bug?
Happens from time to time for me as well. I'm not sure if there is a specific trigger, but sometimes your corpse just doesn't last as long as it probably was intended.
Your corpse can fall through the terrain. It's not that it's vanished it's that it's vanished beneath cover.