To me, the font looks weird in italic, the "g" looks more like a "ç":
Not a big issue, but it still disturbs the reading flow, maybe you could consider a different type for italics.
Thanks for sharing this issue. I could reproduce the issue on Windows 8.1 in Chrome and Firefox. After swapping out a different set of font files, it appears the issue was with the previous font files. I wouldn't say they were corrupted, but they had some odd artifacts within them.
The files have been updated and should work correctly now.
^^^ This screenshot was taken in Windows 8.1 Chrome.