GNOME Bugzilla – Bug 720428
font kerning on Windows is broken
Last modified: 2015-04-18 05:14:45 UTC
Please look at this bug report for lilypond: https://code.google.com/p/lilypond/issues/detail?id=2657 In comment #12, Behdad suggests a small patch for basic-win32.c, asking for a Pango Win32 developer to check that.
This seems to be resolved with Pango versions >= 1.28.