at y=0, //paste & //stack do not place redstone components #2840

WorldEdit Version

7.3.16

Platform Version

Fabric 0.17.2

Confirmations

• I am using the most recent Minecraft release.
• I am using a version of WorldEdit compatible with my Minecraft version.
• I am using the latest or recommended version of my platform software.
• I am NOT using a hybrid server, e.g. a server that combines Bukkit and Forge. Examples include Arclight, Mohist, and Cardboard.
• I am NOT using a fork of WorldEdit, such as FastAsyncWorldEdit (FAWE) or AsyncWorldEdit (AWE)

Bug Description

Likely a duplicate of #2516, but I have found some additional oddities that others have not noted that could help fix the issue, and I don't have permission to comment on the original post

1. The issue seems to only occur at height y=0
2. The number of blocks has some impact, where the issue is more likely for larger numbers of blocks. However, I've seen the issue reproduced when stacking as few as six blocks 2 times (see replication steps)
3. Horizontal co-ordinates also have some effect on whether the issue shows up. In particular, I've observed that at the co-ordinates 254, 0, -86, but not across the chunk border at 257, 0, -86
4. The direction you stack the components matters. Not sure what the particular pattern is, but at co-ordinates 0, 0, 0 the issue shows up when stacking north, but not south.
5. The issue seems only to show up if redstone comparitors make up a certain percentage of the blocks being replaced, something between ⅛ and 1/6

Expected Behavior

//paste & //stack places redstone components the same regardless of co-ordinates

Reproduction Steps

1. Create a test stucture containing redstone dust, a repeater and a comparitor at 0, 0, 0 facing west

2. Select the structure using WE, turn north and execute the command "//stack 2"

3. Observe incorrect behavior

Anything Else?

Other workarounds are mentioned in #2516, but another solution is to ensure that all redstone builds are constructed well above y=0. I've checked all other heights from -62 up to 320 and y=0 is the only height this occurs at.