I'm not sure if that's a bug but I always thought the fastRedstoneDust option shouldn't break any contraptions.
For example if you want to create a 0-tick like that (the bottom piston has to be sticky, place the redstone block at the end)
it is locational if it works or not with fastRedstoneDust enabled but it always works if fastRedstoneDust is disabled (it doesn't work if the pistons are south or east of the redstone dust but it works if they're north or west of the redstone dust).
There are more examples where fastRedstoneDust breaks some 0-ticks but they're more complicated to explain.
The rule description (also available in-game) mentions that not all behaviour is guaranteed to be exact, so I'd think this would be expected, but I don't know for certain.
I'm not sure if that's a bug but I always thought the
fastRedstoneDust
option shouldn't break any contraptions.For example if you want to create a 0-tick like that (the bottom piston has to be sticky, place the redstone block at the end) it is locational if it works or not with
fastRedstoneDust
enabled but it always works iffastRedstoneDust
is disabled (it doesn't work if the pistons are south or east of the redstone dust but it works if they're north or west of the redstone dust).There are more examples where
fastRedstoneDust
breaks some 0-ticks but they're more complicated to explain.This piston door for example doesn't work if
fastRedstoneDust
is enabled but does work if it is disabled: https://youtu.be/r23hmRQLNh4 https://youtu.be/TIe9APEOaXc