Anyone know why "avoid crossing perimeters" doesn't?

Anyone know why the "avoid crossing perimeters" option seems to do very little, if anything? Even when faced with just avoiding one hole in the middle of the part, it repeatedly travels straight though. It even seems to generate more paths through the hole than even if it was just a random distribution. This is with the last several versions of slic3r, currently running 1.2.0

.stl and screenshot attached.

[drive.google.com]
[drive.google.com]