This is a re-report of a bug that could not be reproduced and was closed. MCPE-32244

When stacking blocks vertically, players will move unintentionally.

Steps to Reproduce:
1.download link world
2.upload to realm, and join the world
3.start to stack blocks by jumping straight up

This is a realms-only issue and does not occur with downloaded local games.
The issue continues even after moving to a new realm.
Although it is not 100% reproducible, there is a high probability that it will occur.
The version at world created 1.20.10.

world data
https://drive.google.com/file/d/1-Fj_CFinwtuKDqr38YvT0jjoYxaVGerc/view?usp=sharing

(30MB)

The issue has been confirmed on PS4,5 and PC.