When Trying to delete a world in 1.15.1, the world will still be there even after confirming the deletion to the world.

• • Expected Result **

The world would be deleted after confirming the deletion of the world.

• • Actual Result **

The world stays there even after confirming deletion of the world.

• • How to Reproduce **

1. Launch 1.15.1 Minecraft
2. Create a 1.15.1 World
3. Delete the World After Creating It

This is honestly a pretty big bug for survival world players, if they wanted to create a new world but going to have the same name then the two worlds would get confusing and the world would be a waist of space.