[Redstone] - Pistons aren't close after being unpowered from back side

Picture showing off the problem:

When pistons are powered from back side, like on attached picture, they all are open. But after being unpowered, not all of them are closing. What is more, this also depends which block of this redstone is being power and if there are any another pistons between those on a picture. Sadly I have to say that this bug will cause many redstone devices won't work.