When you are at a place with one block height difference, and you pour lava on the higher block, and pour water on the same place, the lava will disappear, and it’s not generating obsidian.
When you are at a place with one block height difference, and you pour lava on the higher block, and pour water on the same place, the lava will disappear, and it’s not generating obsidian.
This is a duplicate of MC-8930.