Technically, 'kern' isn't in the OTF spec. GPOS is instead.
Windows doesn't read kern tables
This is causing fast/text/svg-font-face-with-kerning.html to fail on Windows with the SVG -> OTF Converter.
I think the quote that is most relevant is
"OpenType™ fonts containing CFF outlines are not supported by the 'kern' table and must use the 'GPOS' OpenType Layout table." from https://www.microsoft.com/typography/otspec/kern.htm