I testet it and it still works in 14w20b.
The item frame has to be in a different chunk than the block it's hanging on in positive X or Z direction
Not only the item frame and its content get duplicated but also every other entity in the chunk the item frame is in.
David Wörgötter
MC-32721
I testet it and it still works in 14w20b.
The item frame has to be in a different chunk than the block it's hanging on in positive X or Z direction
Not only the item frame and its content get duplicated but also every other entity in the chunk the item frame is in.