Blocks affected by gravity (e.g., sand and gravel) that are not part of a carriage fall through that carriage even if that carriage in its new position would support them.

Some modded blocks (like ComputerCraft computers) do not retain their state after motion.

Fire does not render correctly.

Some blocks in-transit are not yet rendered.

Drives will not work on structure carriages when placed on an edge instead of a corner.

Recipes do not use the Forge material dictionary.