World not loading

I was loading up a new amplified world (bug also happens with the normal world, I tested it) and it took a long time to download terrain, and put me in an empty world with nothing but air, I waited a good long time, maybe 5 minutes, nothing happened.

What I expected to happen was that it would load up a normal amplified world that I could, y'know, play in.

What actually happened was It put me in a world of nothing after taking about 1 to 2 minutes to download terrain, and I was falling forever

Steps to Reproduce:
1. type in your name of world
2. select what type of world, click create
3. wait to download terrain

And poof, my bug