Limitations

Limitations

Things Expanded Building deliberately does not do, or does not do yet (as of version 1.1.1).

Planning

• Fluids are disabled by default (allowFluids).
• TNT cannot be used in planning mode.
• Falling blocks (sand, gravel, …) need solid ground below them while planning.
• Containers and interactive blocks (chests, furnaces, levers …) cannot be used while planning. Doors, trapdoors and fence gates are the exception. Everything works normally again once the plan is finished.
• Filled storage cannot be broken while planning, and the builder will not clear it either. Empty storage behaves like any other block.
• AE2 cables and parts and similar items that are not blocks themselves cannot be planned. AE2 blocks (drives, controllers, interfaces, pattern providers, energy cells, crafting units, inscribers, chargers, sky stone chests and others) can be planned.

Blueprints

• Blueprints store block states only, never block data (NBT). Everything the builder places is empty: chests without content, signs without text. This is intentional – otherwise a blueprint would be a way to copy items.
• Whether a door is open is not stored; doors are always placed closed.
• Imported schematics lose air, entities, contents and block properties unknown to this Minecraft version. Blocks from mods that are not installed are skipped.
• The old MCEdit .schematic format is not supported.
• At most maxBlueprintBlocks positions (default 100,000).

Building

• Shape updates are suppressed while building so attached blocks do not fall off. Redstone components may need one interaction before they work.
• Cleared blocks are destroyed without drops.
• The maximum build speed is 20 blocks per second.
• Without keepSiteLoaded, a build only progresses while its current chunk is loaded.

Edge cases

• A hopper outside the site that feeds into a chest placed during planning can lose items: resetting the world removes the chest together with its content. It cannot duplicate anything.
• The ghost blueprint uses lightweight shapes, not the exact vanilla block models.
• Forge for Minecraft 26.3 is not available yet, because Forge has not released a build for that version.