Confirmed in 1.8.9. I generated a new superflat world with the dirt preset changed to 50, so it can be deeper. I teleported to 0 62 0, the center of the world, set my spawn, and started building. However, I soon saw a large structure in the distance, and I realized that it was a chunk. I saw a bunch of them, and it was really scary. I deleted that world. The thing is, I had created a world before this, but I forgot to set it to superflat and creative mode. It was normal and was in survival. I suppose that the chunks didn't unload, causing them to load into the superflat world with the exact same name. There was a lake in one of the chunks, and in the superflat world it didn't flow over the edge, so I suppose the chunks just didn't unload when deleting and recreating the world in superflat.
Ari Staggs
MC-82422
Confirmed in 1.8.9. I generated a new superflat world with the dirt preset changed to 50, so it can be deeper. I teleported to 0 62 0, the center of the world, set my spawn, and started building. However, I soon saw a large structure in the distance, and I realized that it was a chunk. I saw a bunch of them, and it was really scary. I deleted that world. The thing is, I had created a world before this, but I forgot to set it to superflat and creative mode. It was normal and was in survival. I suppose that the chunks didn't unload, causing them to load into the superflat world with the exact same name. There was a lake in one of the chunks, and in the superflat world it didn't flow over the edge, so I suppose the chunks just didn't unload when deleting and recreating the world in superflat.
Confirmed in 1.8.9.
I got a screenshot of it.