There was a bug in basic2d.Map that would cause the wrong tiles to be used which could result in a wrong path. This has been fixed in v1.3.1
I also forgot to make a blog post about v1.3. I realeased it a few months ago and it’s a pretty major upgrade from v1.2 so be sure to check it out. You can find more details about the new features on the download page and in the Astar.as comments.