Whenever you copy an area which has extended (sticky) pistons and paste it, they are copied fine but drop as items when you undo the paste. The same happens when you paste over an area with extended pistons.
This does not happen with pistons that are not extended.
Whenever you copy an area which has extended (sticky) pistons and paste it, they are copied fine but drop as items when you undo the paste. The same happens when you paste over an area with extended pistons.
This does not happen with pistons that are not extended.
Tested with following setup:![image](https://user-images.githubusercontent.com/21037710/88776403-30a27f00-d186-11ea-9053-0d6df40a3bb0.png)