If you stand on top of a stair or slab and place water on it, it will go through.
This is working by design. Placing water against a block that can be waterlogged will fill it with water.
Reporter: Eliot Scott
Assignee: (Unassigned)
Created: 2018-05-19T14:46:58Z
Updated: 2025-04-14T19:00:29Z
Resolved: 2018-05-19T19:35:45Z
ADO:
Confirmation Status: Unconfirmed
Area:
Mojang Priority:
Category:
Labels: slab, water, waterlogged-blocks
Affects Versions: Minecraft 18w20c
Fix Versions:
Retrieved 2025-06-11T00:37:53Z
This is working by design. Placing water against a block that can be waterlogged will fill it with water.