Lag stops players fall damage

When there are some lag spikes, for example when the world is auto saving, it creates too much lag that it stops players from taken fall damage for a bit of time if they are about to fall from something

Steps to reproduce:
1. Be in a world with more than 5 friends (with decent lag)
2. try falling over and over on the ground
3. you will notice sometimes you won't get any fall damage

Observed Results:
You and many more players don't get fall damage because of lag (not even delayed fall damage)

Expected Results:
We should get atleast delayed fall damage (like in console edition) when we are lagging and fall off a great height