It is a weird redstone glitch. When i put a piston and above that a block of air(00) and then a redstone block or a block that has redstone on top of it the piston gets powered and extends.

The piston should not have extended.

The piston di extend wich is something that should not happen.

Steps to Reproduce:
*=PIston ~=Air >= Redstone block

1. Put the blocks like this:

>
~
*
2. This is what i did and i would like you to fix it.