This is the BUD-effect
Destroying activated redstone causes a lesser radius of block-update than unpowering the redstone.
And with this technique you could create one-time BUDs that don't take up much space
it seems like the bottom pistons pull the pistons ontop even though they weren't allowed to, because these are extended(retracting)
and coal blocks too 🙂
or coal should be like netherrack
are you sure that this is 100% fixed?
http://youtu.be/Q-AOr8dD2F4?t=29s
maybe i'll just open another issue for that
has been around forever? if forever is since 1.5 or 1.5.1, then yes. or it has been gotten worse since 1.5.1 and was unnoticeable b4. since 1.5.1 it takes 3-20 seconds to completely "sit down" in a minecart. only then you are able to press buttons etc.
reopen please!
dunno what i've seen, but this bug is still in, maybe shifted by a few pistons in one row