Error - Superflat
An error in chunks after creating a superflat world.
Seed: 2424695889106062807
Superflat code: 2;7,20x1,5x3,2;3;biome_1
I used the option to re-create the world, but the glitch did not appear when I did so.
Created Issue:
Error - Superflat
An error in chunks after creating a superflat world.
Seed: 2424695889106062807
Superflat code: 2;7,20x1,5x3,2;3;biome_1
I used the option to re-create the world, but did not appear when I used this option.(Sorry, I translated using Google Translator.)
duplicates
is duplicated by
I think I know the problem
Sometimes minecraft doesn't delete the entire folder when deleting a world. Then if you generate a world with the same name, the chunks are loaded from the previous world and generate the rest as the actual world. I suggest that you delete the world, and check your saves. If the file is still there, delete it.
is duplicated by
An error in chunks after creating a superflat world.
Seed: 2424695889106062807
Superflat code: 2;7,20x1,5x3,2;3;biome_1
I used the option to re-create the world, but did not appear when Iused this option.(Sorry, I translated using Google Translator.)
An error in chunks after creating a superflat world.
Seed: 2424695889106062807
Superflat code: 2;7,20x1,5x3,2;3;biome_1
I used the option to re-create the world, but the glitch did not appear when I did so.
Have you tried deleting these incorrectly generated chunks via some third-party program such as MCedit. From the results of this test you could determine whether this is a slight flaw with flatland generation or the game neglecting to read the NBT tags of the save before generating these chunks and therefore generating them as it would with a normal world. This also seams to be the same issue as MC-204.

this has happened to me too like 4 times i took pics. look up superflat and there should be a error report by nathan welch (me)