Hello. (Sorry! My English skill is so terrible. It may be difficult to read.)
I investigated this bug, but cannot find the same case so write it here.
If i create a new icon on my desktop, it will be created in a strange space between the 2 displays. (image below)

Since "Create new icon from right click" is specifying the position, there is no problem. This bug will happen if I create a new icon without specifying a position, such as "Save with name" from Program. Fences seems to be able to create icons only within the green range of the image. (Of course, there is no problem if I turn off Fences)

These icons are obviously off the grid.
There are some issues that might be related to this bug. Sorting is not working.
―Sort by Name→ 
Yeah, It does not mean that just does not work, it is buggy. I don't even know what is being sorted by.
Why does this happen? And how can I fix this? Even if I reinstalled Fences, the bug was still intact.