Ok, so a background:
On most servers, there's an exploit where when you DC and log back in, it kills your momentum. This makes it possible to "parachute" by disconnecting right before you hit the ground, then logging back in and taking no damage from a fall.
This report isn't about that bug; you have a plugin in Prosperous (though not, it seems, on infinitus) to prevent it. After you land on prosperous, it retroactively applies damage you should have taken from any falling you did before you disconnected.
*however*
There's a short gap between t