16x16 square generated on the map.

Thank you for your report!
However, this issue has been temporarily closed as Awaiting Response

How often it happens? Is this still an issue in the latest version? If so, can you please add it to the affected versions (or mention it if you are not the reporter).

 
This ticket will automatically reopen when you reply.

Quick Links:
📓 Issue Guidelines – 💬 Mojang Support – 📧 Suggestions – 📖 Minecraft Wiki

Thank you for your report!
However, this issue has been temporarily closed as Awaiting Response

How often it happens? Is this still an issue in the latest version? If so, can you please add it to the affected versions (or mention it if you are not the reporter).

 
This ticket will automatically reopen when you reply.

Quick Links:
📓 Issue Guidelines – 💬 Mojang Support – 📧 Suggestions – 📖 Minecraft Wiki

This happened only once in v1.16.200
In version 1.16.220 nothing like this has happened so far.

This happened only once in v1.16.200
In version 1.16.220 nothing like this has happened so far.

Can you export and upload the world affected here?

Can you export and upload the world affected here?

Cleaning up old tickets: This ticket had been set to 'Awaiting Response', but has not received a response from the reporter (~3 months+) so is being closed as Incomplete. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines which includes steps to reproduce the problem.

Quick Links:
📓 Issue Guidelines – 💬 Mojang Support – 📧 Suggestions – 📖 Minecraft Wiki

Cleaning up old tickets: This ticket had been set to 'Awaiting Response', but has not received a response from the reporter (~3 months+) so is being closed as Incomplete. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines which includes steps to reproduce the problem.

Quick Links:
📓 Issue Guidelines – 💬 Mojang Support – 📧 Suggestions – 📖 Minecraft Wiki