Nine-patch generator line artifacts

What steps will reproduce the problem?
Open the nine-patch generator in Chrome under Linux Mint (latest versions to 
date: Linux Mint Petra and chrome Version 33.0.1750.152). Create a nine patch, 
modify nothing (except the name), and download the zip.

What is the expected output? What do you see instead?
The expected output, when inserting the image into the app and run it on a 
Galaxy Tab 10.1, is to see an image in the center of the screen and nothing 
else. Instead, I see the image and, in the left side, there's a vertical line 
the size of the image in the center, and on the right side, there's a vertical 
line that goes from top to bottom.

Please provide any additional information below.
I had this working under Windows 7 on the exact same machine. After switching 
to Linux, the issues appeared. I've read in the past that with version 33 the 
issue would go away, so I waited for that. Still no dice. I now have to ask 
someone else to create my 9patch images, which is counterproductive. A diff 
tool shows me 2 different ("error"?) pixels on the lower horizontal line, but 
when looking to each image individually I can't see anything out of the 
ordinary.

Original issue reported on code.google.com by google....@3dz.com on 24 Mar 2014 at 4:46

shirone / android-ui-utils

Nine-patch generator line artifacts #213