[MCPE-156679] 1.19 deleted chunks below Y0

All of my builds in my flatworld from 1.18.32 have been deleted if it was below Y0 as soon as I updated.

Linked issues

is duplicated by 17

MCPE-155495 Broken world half of the world disappeared Resolved

MCPE-156698 Large chunks of builds below Y=0 get deleted. Resolved

MCPE-156719 Almost everything I built underground disappeared after 1.19.0 update. Resolved

MCPE-156763 Wild update deleted everything underground in Minecraft flat world Resolved

MCPE-156782 Everything below Y level 0 is reset upon insalling the Wild update and running previously created worlds. Resolved

12 more links

Attachments

18140319c2b38-4e30D61DD1EA54D6E6C.657AA5AB1BAF0900_message_423587683182138_1654639387430.jpg

18140319c2b38-4e30D61DD1EA54D6E6C.657AA5AB1BAF0900_message_423587683182138_1654639387430-1.jpg

1814032b5bd83-4e30D61DD1EA54D6E6C.657AA5AB1BAF0900_message_423587684622194_1654639393055.jpg

1814032b5bd83-4e30D61DD1EA54D6E6C.657AA5AB1BAF0900_message_423587684622194_1654639393055-1.jpg

Comments 25

[Mojang] Mega_Spud (Jay) 2022-06-07T16:24:14Z

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.
On Android or iOS you need to use a file explorer to navigate to Device storage > games > com.mojang > minecraftWorlds
On Xbox or Switch the only way is to upload it to a Realm, and then download the world on Windows 10 or Android/iOS. (Please do not purchase a Realms subscription just to provide a world to us - but if you have a Realm already this may be a viable option if you wish to do so.)

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.

Marco Bergsma 2022-06-07T20:40:16Z

I can also confirm this has hit my realm and the realm of a friend. We both have realms for many years, based on superflat where we added a lot of stuff below y=0. All (or at least pretty much all) of it is gone or invisible/not rendering.

When flying around for a long time, sometimes stuff comes back and stays as well. It's very, very odd.

Below screenshot shows random stuff loading in...at first all of this was void.

[media]

Probably not relevant, but the same map (converted just a week ago) works a charm on Java 1.19

Edit: perhaps important: I play on Windows, my friend on PS4 and Windows while another friend plays on Xbox. All the same problem with realm AND offline copies.

Tactical_Idiot 2022-06-07T21:00:52Z

Same thing happened to me. Ig the only fix is to wait until they fix the bug, then load an old backup of the world

Hannah J 2022-06-08T11:04:34Z

I have the same issue. It happened right after the update, and it seems like all the blocks below y0 were replaced with air. It leads to some weird stuff like redstone dust placed at exactly y0 floating on nothing, and bubble elevators that extended below y0 stop in midair with no water extending past y0. Even though the soul sand has been deleted and a lot of the water is missing, what is left at and above y0 still pushes you up despite there being no soul sand below.

louisfranco20 2022-06-08T13:23:17Z

I can confirm, the same happenned on my map after the 1.19 update. Hopefully I saved my map yesterday

15 more comments

Chris Reddington 2022-06-08T13:50:48Z

This issue is affecting my realm and Bedrock worlds, over a large area. Hoping this can be fixed soon!

N1xht 2022-06-08T15:32:46Z

Didn’t happen in my flat world on iOS.

K31thc0m 2022-06-09T08:32:39Z

THE SAME THING HAPPENED TO ME

I built an underground train station a month ago and when I loaded it up after updating, it was just gone. All my effort gone, simply because it was below Y=0.

Marco Bergsma 2022-06-09T18:48:01Z

more weird stuff. So I rolled back to a 1.18 copy (Bedrock Windows 10) and structure blocked everything I needed but not everything as I wanted to clear some stuff out anyway.

So I upgraded to 1.19, everything was gone but when putting back the structureblocks on their exact coordinates and loading them, everything was back....untill randomly, parts of the stuff I DIDNT structure began to appear....so I removed it, because I didn't want it and it keeps coming back....

[media]

I can keep deleting the stuff in the red outline, but it keeps coming back (on my realm. Haven't tested on my offline copy)

EDIT: can confirm this behavior is also present on an offline copy.....so it's bugged beyond comprehension 😞

blueemeraldhd25 2022-06-09T18:53:48Z

Yep can confirm, windows 10 user here all 200+ of my command blocks were deleted because of this I have a back up from 10 days ago but I dare not open it let's hope they reverse the damage

Lealdo 2022-06-09T20:36:38Z

It looks as though ancient cities are generating through buildings, ripping out huge portions, then removing the structure afterwards.

Zekael7 2022-06-10T12:09:16Z

This is on Windows Bedrock

Built a map world in superflat using levels to allow dungeons. Minecraft updated to 1.19 automatically and everything below y=0 is either gone or partially deleted. Here is an example of a partially deleted area with void visible through the holes.

[media]

Marco Bergsma 2022-06-11T19:40:47Z

so....I reverted back to 1.18.31 to at least be able to keep working on my build. I literally just experienced certain deleted structures at y=-60 to reappear at will.....I delete them (/fill air or by hand) and they just keep getting back.....and this is in 1.18.31, which is very strange.

The structures present in these "perpetual areas" keep coming back, funnily enough, if you /fill them with another block type, the area stays filled with the block used. But the second you /fill with air, it reverts to its previous state...

[media]

Supernt7852 2022-06-13T09:55:58Z

After I discovered this in my world, I opened a backup which was created before I updated to 1.19.0, and all of my blocks below y=0 are still gone. I advise everyone not to open their backup worlds before the bug is patched.

DerTypmitH2O 2022-06-14T14:10:14Z

Even if you un install and reinstall the game it still happends and even pulling it from an other device (Stick) wont fix the problem

BeeTeeKay 2022-06-15T04:22:34Z

Yup, just discovered this bug on my older brother's realm and... wow, am I sad this bug exists. This affects realms.

tireide51310 2022-06-15T13:03:55Z

I also suffered damage. Probably, I think that the problem will occur in the world where there is a bedrock at Y coordinate 0 in the flat world.
I think this fix is bad⇩
"Cleaned up leftover biome/block/light memory when leaving a world"

tireide51310 2022-06-15T13:19:30Z

[media]

I am in great trouble because only a part of the pixel art below Y0 is missing.😞

Also, the problem of the underground disappearing is not limited to windows and Android, but I also confirmed it to Switch.

serioustekkers 2022-06-15T17:59:40Z

Genuinely crying because I spent 10 months working on this bunker just for all of it to be deleted. Please fix this mojang!

bennnn 2022-06-21T03:56:49Z

Messed up everything built under Y0 (A lot of stuff) and this bug is very annoying.

cheeesiest 2022-06-21T04:21:56Z

[media][media]

After updating to 1.19, everything below Y=0 disappeared (first picture). I had a backup copy of the world which I made before the Wild Update, but after loading it in, everything below Y=0 was gone again. After exploring, I found that some areas outside of my rendering distance were preserved (the dirt column picture), but nothing else. I wasn't able to obtain an older version to see if the loading the backup would have everything saved. (Windows 10 user)

BeeTeeKay 2022-06-22T23:05:48Z

...are chunks affected by this bug deleted forever? After updating to 1.19.2 the chunks affected by this bug remain missing.

Marco Bergsma 2022-06-23T05:00:26Z

I'm afraid so, BeeTeeKay64.

And while the main part of the bug (a lot of stuff below y=0 gone missing) is fixed, there is still part 2 of this bug that's apparently not addressed; in some cases, older structures below y=0 can't even be filled with air now. See also my screenshot below...I have some old parts that I wanted to simply remove (by hand or /fill with air) but they kept coming back. These particular areas kept coming back, no matter what I tried. So in the end I settled for filling them with emerald so i know these parts could be removed later. After 1.19.2 just hit, I tried removing them and presto; they kept coming back still.

[media]

(These emerald structures below y=0 keep coming back unless overwriting with something other than air)

tireide51310 2022-06-23T07:06:32Z

I think the underground buildings will remain missing until

you update away from the buildings below Y0 before updating or use the backup before updating to 1.19.

Marco Bergsma 2022-06-24T10:06:48Z

So, an interesting observation....I still can't get rid of certain structures below y=0 that have existed prior to 1.18.xx

I made them all emerald (as per my previous report) so once the issue is resolved, I can remove them. However, I tried to hollow them out to see what would happen and what do you know?:

[media]

If I do this, it stays like this. I just can't get rid of the outer layer....perhaps someone with a bit of knowledge can explain what's going on here.....

In short: certain (pre-existing) areas below y=0 cannot be removed....by hand or by /fill air....you can CHANGE the blocks though and it will stay and you can hollow them out and they stay....other than that; they cannot be removed.....they will be back once you reopen your map/realm