Ghost chunks render from seed data

A milder example of this is shown in the video below: a tree teleports as the player approaches.
https://cdn.discordapp.com/attachments/609927246106460170/1088601866520252538/what2.mp4

Here grass on the beach appears to teleport.
https://cdn.discordapp.com/attachments/609927246106460170/1092294240110907493/2023-04-02_23-45-11.mp4

Will you be able to export and upload the world here, or share with any shareable site? 
This issue may be related to MCPE-162480 IMO.
Also I wonder, is this with all worlds in this version? Newly created as well?

Hi @magwar

Here is a copy of my world
https://drive.google.com/file/d/1XEDDcFWxo0wPmS3j7tBNfr4N5FLsWpOD/view?usp=share_link
But i dont really think there is a problem with it (well at least causing this haha, there is an unrelated issue because i downgraded it from 1.19 to 1.18 long ago using chunker and all of my old terrain now has no new generation below and its just void below y0 on most chunks, so dont worry about it)

This issue does happen in other and newly created worlds too. But since the world generation of every chunk in new world is the same as the seed since its... brand new, it's hardly noticed in new worlds. The only noticeable thing there would be that going into new chunks would replace blocks with air when trying to interact with them until it loads properly some time later.

Im sure it's something about the seed data and not some random generation issue because i know how my personal world seed would look with current generation, and the ghost chunks look exactly as if i were exploring them for the first time in newer versions, but it still could be something else, im just trying to provide as much information as i can.

(also, upon further testing and paying more attention, i've discovered this pretty much only happens the first time loading chunks after opening the world, but if you were to log out and log back in it would happen again, as if the problem was getting the chunk data in memory for the first time.
also also mobs bug out when stepping in these chunks, specially mounts like horses)

Noticed this issue in the Greek Mythology Mash-Up world.

I managed to catch some footage of this happening here https://youtu.be/TFxtSi3KKv8?t=209

I also noticed this in the recent betas (1.20.10.20) if you fly around in a cave system in brand new chunks you can occasionally see decorations like sculk blocks change positions. Rendered chunks in the distance change once they are actually loaded.

From what I've tested, this issue ONLY happens in preview versions, I've played every preview since i made this report and in every single one it happens.
I tested if it would happen on the latest releases (Will test again once 1.20 releases, but im sure it won't be affected either), and no, the game behaves normally, so i think this could be an issue with how preview builds are compiled or something?

multiple people on the realm I play on have fallen through the ice path and died, though I mostly just have the issue of being inside a chunk of netherrack for a few seconds, I finally fell and was able to get a clip though my case was still less intense than the others have had: https://www.xbox.com/play/media/5HVGL2JK65

Since this Bug appeared, it seems to have appeared in Every Preview Edition,because I never had seen in Release Edition.

Affects in 1.20.60.21 Preview

Worth nothing, this causes MAJOR lag spikes when the game has to reload the ghost chunk into a chunk with real data.

Previously, I was only encountering ghost chunks while flying, but now I’m loading into them when going through nether portals. Is this the same bug or a new one with the same effect? Each portal ghost chunk I’m seeing either puts me underwater or inside netherrack, but doesn’t cause any suffocation, although it did make the damage sound anyway on one particulatly laggy portal travel

I have been getting this is my old world for several updates now. I am not in preview, this is an unmodded full release survival world. We only see this when going through portals to the overworld.  

So I'm not having the issue of flying and going into goast chunks I'm having a issue where going threw the nether portal and sometimes falling threw it into I guess goast chunks I don't think these are the same issue

https://www.xbox.com/play/media/WjiDdfYSqW

https://www.xbox.com/play/media/wztz3rk8QG

Same bug on my realm on Xbox series S. We have a problem since 1.21. when we move in the realm the game load chunks unmodified. The modifications run step by step.

This is happening quite often in realms although seemingly at random.  When entering the overworld into an area underground that has since been cleared the game initially renders the stone that was part of the seed before updating a few seconds later.  In the nether if you have a portal on a raised platform there is a chance of falling past the floor before it has a chance to render.  I recently took a swim in lava due to this issue.

For me, this issue has been slowly worsening with larger areas of ghost chunks and lag spikes 

This is still happening on my realm as of Garden Awakens update, not on preview

I'm not sure if anyone else is experiencing this, but it seems a side effect of this is a huge amount of lag going down to 5 frames a second.