Player incorrectly takes damage when dismounting skeleton horses

Steps to reproduce:

1. Spawn a skeleton horse and ride it

2. Switch into Survival mode if not in it already: /gamemode survival

3. Jump and dismount the skeleton horse right after you start the jump.

Observed result:
You take damage.

Expected result:
You don't take damage.

Original description:
When you ride a horse like a skeleton horse, drive it and jump,
suddenly take off the horse and you will take damage.
as you see I am not on the air too high to take damage.
I get down before taking off.
It happened on bedrock 1.20.81 single player world with
no behavior packs.(the video name=bedrockworld).
It happnes on Bedrock Dedicated Server too(the video name=bds).
how to realize?
1: Summon a horse
2: Ride it
3: Take off before jump
4: You take damage