Clone with move on structure with dispensers vomits dispenser contents onto ground

Using the new move command (clone with the move mode) I noticed my ship's dispenser guns were spilling their contents with every move.

EDIT: Further playtesting has revealed that it only happens when travelling south or east. Also the chests/dispensors/furnaces are just dropping their contents once. Furnaces retain burn time but forget what the total burn time was (so the flame indicator is always at full but runs out at the correct time).