ok so i found a file on my computer called world i put it on mine craft opened it up and i spawn in the nether but it had giant holes in the sky. when i came up i saw bedrock i walked to the edge and saw green grass and trees. so what the heck has this happened to anyone else
If you move files around inside the "World" folders, anything can happen like that. Mixing files from the DIM-1 folder and from the rest of the world will get mixtures of nether-like chunks and not. Or it'll crash the game.