I was making a Watermelon farm and was testing the redstone when all of a sudden This happened. Any ideas whats going on with that?
Pistons going two sides? I have notice that on 1.8 clients quite a few times (for my stonegen) As far as I know, its still just one of the two sides actually pushing, the other side just being there doing nothing
Most likely a visual glitch. Try right clicking on the 'wrong' side and it will disappear. That or log out and back in and should be fixed. I get this daily at my witch farm. EDIT: Also do not try to break one of the sides. Sometimes this can break whatever it's visually replacing and cause trouble.