I was finishing my house when a creeper comes and killed me. After that, i wanted to create a new Hardcore world but I saw that the old world in hardcore wasn't deleted and i actually can go in again.
What I expected was that the world was deleted when I died and click on the "Delete World" button.
What happened was that the world is playable after doing that without doing anything special.
Steps to reproduce:
1. Create a Hardcore world
2. Die
3. Click on the two buttons that appear on the screen
4. Go to Singleplayer and you will be able to continue your Hardcore map.
Related issues
duplicates
Comments
I cannot confirm this. I created a new hardcore world, immediately jumped in some water and drowned, hit delete world -> back to title screen, went to my world list, and the world was not there.
what do you mean with the Development Console tab?

The "Development console" tab of the launcher. CTRL-A, CTRL-C there, CTRL-V in the ticket.

Incomplete.
Please attach the complete output of the Development Console tab.