Some random chunks in my world are now missing as well as some old structures. There are a couple more occurrences just like the ones I have attached that are within a close proximity to the other missing chunks. They all seem to be in a certain are.
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Was this on a Realm or a local world?
If you have a copy of the world available, you might like to upload a copy of it for investigation.
On Windows 10 you can use the Export world feature.
If the world is larger than 10MB you can upload the world to OneDrive or a similar file sharing site, and then share the link.

I believe it is a local world. I'll what I can do to share a copy.

Thank you for your report!
We're tracking this issue in MCPE-58514, so this ticket is being resolved and linked as a duplicate.
That ticket has already been resolved as Fixed. Please see the main ticket for more information. New occurrences of this issue happening in version 1.16.40 or later are being tracked in MCPE-98789.
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