I have up-voted this bug, but having retracted pistons pass trough redstone is a interesting mechanic. There is no other block (as far as I know) that changes its (redstone) transparency on a redstone signal. And retracted pistons look like full blocks, so they should act like them.
I have up-voted this bug, but having retracted pistons pass trough redstone is a interesting mechanic. There is no other block (as far as I know) that changes its (redstone) transparency on a redstone signal. And retracted pistons look like full blocks, so they should act like them.