It is a location problem. With all 3d games that have areas set out, there is an invisible box around the whole map in which everything has to go, nothing can exist outside this box and the empty space inside this box but outside any texture boxes is usually called the void, if you get somewhere outside of a texture box ( like outside the sky box, under the ground, etc. ) then you are looking into the void, and the view does not refresh when it is not looking at any objects or textures, just looking at the void. So what you saw is the void because it didnt update your view to be different from the loading screen because there was nothing to see. So just wait untill it tells you \"You have fell off of the end of the world\" or type /spawn. ( and btw this has happened to me )
