[MCPE-148068] Large area chunks missing when load the world which was created long ago

this is a world created in 2014.now it works on a realm server.the old chunks near new chuncks disappear when load the terrain.

Related issues

migrated 2021-11-13T16:16:56Z

[media][media][media][media]

[Mod] OcelotOnesie 2021-11-13T18:35:04Z

Thank you for your report!
We're tracking this issue in MCPE-98789, so this ticket is being resolved and linked as a duplicate.

If you would like to add a vote and any extra information to the main ticket it would be appreciated.

If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.

Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki