What happens:
When trying to place one slab on top of another to create a full block, it only works if both slabs are made of the same material. For example, placing a spruce slab on top of an oak slab doesn't combine them into a full block. Instead, the placement is either blocked or treated as a separate block above. This limits building flexibility even though slabs of different types visually align.
What I expected to happen:
It should be possible to stack slabs of different materials (e.g. oak + spruce, stone + brick) to form a complete block. This would allow more creative freedom in building.
Steps to reproduce:
Place a slab on the ground (e.g. stone slab).
Try placing a different type of slab on top (e.g. oak slab).
The game does not allow combining them into a full block.
Environment
Java Edition (latest version as of April 2025), Windows 11, Multiplayer server, Survival mode, no mods or resource packs used.
Thank you for your report!
We are tracking this issue in MC-111465, so this ticket is being resolved and linked as a duplicate.
That ticket has already been resolved as Invalid. Please take a look at the description and the comments section to see if an explanation was provided for why this issue is invalid.
If you haven’t already, please make use of the search feature to see whether an issue has already been reported.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support (Technical Issues) – 📧 Microsoft Support (Account Issues)
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki