I have noticed this a few times recently in which after dying, a player's items get tossed(assuming as result of his player speed) but sometimes they don't quite come back to the ground. I don't if this is as result of them colliding with another entity in the air(player, pball, etc) or if it's something completely unrelated. I haven't played enough on 1.821 to see if this problem still exists, so just let me know if it has been resolved already.