On Java Edition, whenever the player spawns or rejoins a world, you used to have 3 seconds of immunity to all damage except the void and /kill. Now you have none. Not sure if it was intentionally removed or not. Worked in 1.21.1 but not now.

Steps to reproduce:

1. in survival mode build up 10+blocks high on land
2. fall
3. right before you land and fall onto the ground exit the game
4. go back into that same world

Expected Result:

Immunity would keep the player from taking fall damage in that situation.

Observed Result:

Still takes fall damage