Forge version: 35.1.13
Futurepack version: 21.0.1

The player seems to be immune to falling damage when Futurepack is installed. You can still take damage from mobs, hunger and falling into the void.

I also tested this with just Forge and falling damage worked correctly, so it doesn't seem to be a Forge bug.

SO jsut joining a new world and this happens?

Yes, join an old world or make a new world and this happens.

Found out when I accidentally fell off a cliff and lived.

@qrss pleasse try this version Futurepack-1.16.4-21.0.2

Yup, seems to be fixed. Thank you!