Loading Bug

I changed the supersecret colors to the one after Pencil. After 5 minutes of flying around my world, I noticed when I'm far away from objects while in the air, they where beginning to become transparent. I could see through the blocks and the textures looked like lava and bricks kinda. It ruined the look of the world and feel of gameplay. I had the loading of chunks on 6, Fast, lighting off, Max FPS, AA off, VSync off, clouds off, and Adv OpenGL off.