WORLDEDIT-2217 - Reported by Rysin3

I have built a minecart tunnel with eight 1 block tunnels below it for redstone signals with repeaters. For the most part the stack process works, but in certain areas of the stack blocks are missing, and since the tunnel is under ground it lets water in or cuts the redstone "cables".

Am I doing something wrong?

Comment by sk89q

If water is being a problem (as the stack won't do anything about water that enters), you can //stack the roof and walls as well.

Comment by Rysin3

I have stacked the roof and walls and they copy most times but occasionally they don't. Also sometimes random blocks will appear within the "air" parts of my stack as if they've not been deleted.

Comment by sk89q

What do the walls and roof consist of, material wise?

You don't use {{//stack -a}} I assume.

Comment by Rysin3

All of the outer layer is stone. The sides are 2xstone thick, the roof is 1xstone thick, the whole thing is basically a big block of stone with holes in it to act as a tunnel. But in at least one of my 50 stacks some of the outer layer of stone is dirt, not stone, and blocks randomly appeared in the tunnel in the same stack, and water is coming in.

Comment by Rysin3

I have improved it by disabling zombies. I'm not sure if this is by coincidence though. Because my mine was underground I thought maybe blocks couldn't overwrite zombie positions and disabling them seems to have worked.

However somewhere the redstone link is being broken.

Comment by Rysin3

My comment about improving the problem should be disregarded...

Further to my updates, I have tried stacking in mid-air and the problem still exists. Some of the blocks are still random (mainly dirt, coal, and gravel) this appears to only take effect when my stack extents into a region that has not yet been generated.

It should be noted that my copied area is 2x7 with a height of 12. I presume if you tried stacking stone this size with a hollow center you'd be able to replicate this problem using the command "//stack 500 forward" ensuring it goes into an ungenerated region.