World Gen [Debug World] Block When "Broken" unbreak

Whenever you create a debug world, all blocks when broken get replaced by the block you just mined and don't drop their item (in survival/adventure), some blocks, which should break (aka buttons, levers, etc.) when you activate them the drop as an item, and also revert to their previous block state.

What I expected to happen was...:
For the block to drop as an item

What actually happened was...:
All blocks when broken get replaced by the block you just mined and don't drop their item (in survival/adventure), some blocks, which should break (aka buttons, levers, etc.) when you activate them the drop as an item, and also revert to their previous block state.

Steps to Reproduce:
1. Create a debug world
2. Break a block, or click a button