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:
2 please see "bug step2.png"
5.false powered level
6.The piston is not closed
There is no loophole in the portable version