Why is my Minecraft sky only half displayed?

As you can see in the picture, the sky stops around the middle. I would like to know if anyone knows how to fix this.

Press Escape → Options → Video Settings → Details → Sky

set to Off

There's a setting in the graphics settings for that. But I don't know exactly which one it is. Maybe weather? Or an option called heaven?

This is simply because the world is not charged yet. However, if it always does, then it's either a bug or a graphical error. Do you have to look in the settings

This is a bug from the Texture Pack.

No it is not. You can adjust it in the graphics settings.