What I expected to happen was to go into my world, and see things, to play normally.

What happened was, when I tried to go into my world at some point, I could not see anything. I literally saw nothing but a black screen with my hotbar. I could open my inventory and the F3 screen freely, and I could even move around, hear sounds, and see the id's of the blocks I was looking at on the right side of the F3 screen. But I could not see anything, even with nightvision or spamming torches around. This also happens in all of my other worlds, created in 1.8.8 or the snaphot. Relaunching the game did not help. All this was not fixed in 15w31b. Thankfully I can still play in 1.8.8.

What I did:
1. Enter the End, and kill the Ender Dragon.
2. Go into the new portal to the new End terrain
3. Relaunch the game, and go into the world again