So I have noticed that a player couldn't get out of water at some parts of an old world, so I tried with some mobs and they couldnt get out either. Also, this happens only when close to the north and west borders of the world.
Proof : https://drive.google.com/file/d/1p6Iv86MQEpG4UwSExCSw8nrFUH10Fa-8/view?usp=sharing
Thank you for your report!
We're actually already tracking this issue at MCPE-42058, so I will resolve and link this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
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