Player's y-coordinate is slightly increased when landing on a ladder/vine after gliding into it with elytra

Steps to Reproduce:

1. Create a tower of any solid block and place ladders on one side

2. Equip an Elytra

3. Press ‘f3 + f6' and set ‘player_position’ to 'Always’

4. Glide into the ladder, straight on

5. Before reaching the ladder, run the following command to make the results easier to see: /tick rate 1

Observed Results:  

Player’s y-coordinate increases after they land on the ladder and the Elytra player orientation has almost transitioned into the player’s normal standing orientation

Expected Results:  

Player’s y-coordinate doesn’t increase without any further input that would make them climb the ladder