When you put a red stone on top, turn off the red pistons on both sides of the pistons, and the pistons will always open

Put the summary of the bug you're having here

When I put a red stone on the piston, the red stone closed down, and the piston remained open until you destroyed the redstone.

(+)redstoneblock cannot closed 

What I hope to happen is...

Will be closed

What actually happened is...

The piston will not be closed, and it will be closed if you break the redstone

Steps to Reproduce:

1.setblock piston

2 please see "bug step2.png"

3.open level

4.setblock redstone(screen)

5.false powered level

6.The piston is not closed

There is no loophole in the portable version