When using the /setblock command to create ladders, it instead creates a solid transparent block.

What I expected to happen was...:
A ladder to appear on the wall.

What actually happened was...:
The ladder appeared as a solid, invisible block. Tested with both command block and chat box, as well as relative and precise coordinates, with the same result. Placing any block next to the ladder, via command or by hand, will destroy the invisible ladder block and drop the ladder item.

Steps to Reproduce:
1. Use the /setblock command to set a ladder
2. Observe