Summary:
When falling from a certain height (12, 14, 15...), sliding on a honey block protects against fall damage, while from a certain height (13, 17, 20...) it does not.
Previously had a similar issue with other blocks MC-185695 (twisting vines, weeping vines, normal vines, scaffolding (when sneaking), and ladders (when not hitting the top)).

Steps to reproduce:

1. Place 1 block of honey on the ground.
2. Approach the block of honey back to back.
3. Write teleportation to different heights /tp @s ~ ~14 ~ (instead of ~14 try also ~17, ~20, ~15 or others).

Observed results:
When falling from a certain height, the sliding of the honey block does not protect the player from falling.

Expected results:
Sliding on a honey block will always protect the player from fall damage.