When you only have one world and you delete it, after the world is deleted, instead of the game putting you in the create new world screen (as it has been doing for the last forever), it now puts you in the empty singleplayer world list, which is no longer meant to ever be visible.

How to reproduce:

1. Have exactly one (1) world in your singleplayer world list.
2. Delete the world.
3. Wait for the "Preparing for world creation..." screen to go away.
4. Notice that you are now in the empty world list.

What I expected to happen was:

I would be put in the "Create New World" screen.

What actually happened was:

I was put in the empty singleplayer world list.