Noto Serif Italic: Hinting for 'X' is mangled

What steps will reproduce the problem?
1. Check out revision 3bd8e46 or later of 
fonts/individual/hinted/NotoSerif-Italic.ttf.
2. Render the character 'X' in this font on a system with bytecode hinting 
enabled (e.g., Windows, recent versions of Freetype).

What is the expected output? What do you see instead?
Expected: The character looks like a normal X.
Actual: The character looks vaguely like an X, but is extremely misshapen.

What version of the product are you using? On what operating system?
Revision 3bd8e46 or aae16d0; Windows 7.

Please provide any additional information below.
Screenshot of Windows' font rendering is attached.

Original issue reported on code.google.com by codeman38 on 26 Feb 2015 at 4:49

Attachments:

notoserif-italic-X.png

rizwan3d / noto

Noto Serif Italic: Hinting for 'X' is mangled #270