WORLDEDIT-2814 - Reported by Never.Mind

Operations (like //stack, //paste, //move, //replace and other ones that change blocks) applied to large regions (more than at least 200 by 200 blocks) tend to have errors, resulting in absense of blocks where they are supposed to be.
Here's an example: http://i.imgur.com/HCdbLBg.png
The region's size is 635 by 635 by 29, that is 11.693.525 blocks.
These lines underneath the floating hill are not supposed to be there. Same happens with any and all selections that exceed a certain amount of blocks.

Comment by Never.Mind

derp, didnt notice that it's a duplicate of http://youtrack.sk89q.com/issue/WORLDEDIT-2370