Not turning into a Concete

I placed a Concete Powder in 1 by 1 by 1 water.

What I expected to happen was...:
It will turn into Concete

What actually happened was...:
It did't turn into a Concete Block

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. You just place a Concete Powder in water
3. ...