[Bug]: [1.20.1] Not rendering top layer of world after changing world generation

[Emedo80]

What happened?

Hello,

I'm creating a modpack for me and my friends and in the last changes I made I added mods that change the world generation.
Doing so, Journey map is not rendering the top layer of the world for chunks that were already generated.
I've already tried removing previously generated map.

I have tried xaero's mini map, and it is doing the same exact thing, but there is an option called "ignore server heightmap" that fixes this issue

Here are some screenshots:

With Journey :

As you can see on the right, it is rendered properly for newly generated terrain.

With Xaero's :
Before "ignore server heightmap"

And after "ignore server heightmap"

Hope you can help me !

Best regards,
Emedo

Mod Loader

Forge

Minecraft Version

1.20.1

Version

5.9.18

Relevant log output

Here are the logs :

latest.log
journeymap.log

[mysticdrew]

If you are running a server, start the server once with this command
java -jar server.jar --forceUpgrade --eraseCache

If you are playing with the client, do this

[Emedo80]

Hello,

It is the right fix !

Thank you

[mysticdrew]

Hello,

It is the right fix !

Thank you

Great! glad to help

[BasquiatThe1]

I have the same issue, but in singleplayer. Optimizing the world and erasing cache data doesn't seem to work.

EDIT:

Nevermind, just took a long time for the affacted chunks to get updated.

[WormzonStringz]

i am having the same issue but a bit worse, it is like rendering what is below what i have already rendered and it has also brought the map from the other mutliplayer server i am on into this one, i dont know what i did or how to fix it

[mysticdrew]

If you are running a server, start the server once with this command java -jar server.jar --forceUpgrade --eraseCache

If you are playing with the client, do this

this tells you exactly how to fix it

[mysticdrew]

I've now locked this post, as the solution is posted. Which is why it is pinned.