bug redstone cube + piston

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By the screen, I would say works as intended as redstone powers pistons diagonally.

I just put a piston pushes a block of redstone which then activate another piston and the second piston remains locked even if the unit does not activate redstone more, I reproduce this bug several times and each once I got there
(Google trad)

Rather than "Works as Intended", this is an obvious duplicate of MC-108