Summary:
In the first versions of minecraft bedrock, when mounting an entity (boat, minecart, horse...), other players could see a quick animation of the player moving to the entity. (tested on version 0.15.4.1, animation is already missing in 1.1.5). This can also be seen in "Minecraft: Pocket Edition Trailer 2015". In the java version, this animation is also present in the latest versions and is visible to the player himself, regardless of the set perspective. Animation in the java version adds smoothness when mounting an entity.

Steps to reproduce:

1. Place an entity that you can sit on (like a boat).
2. Mount an entity.

Observed results:
The player instantly moves to the entity (teleports).

Expected results:
There will be a slight smooth animation of the player moving towards the entity (visible to both the player and other players).

Video:
Bedrock 0.15.4.1 Minecraft_ Windows 10 Edition Beta 2022-06-18 12-36-40.mp4
Java 1.19 1.19_Java.mp4

Image: