[luatex] glyph width with palt + kern features

[Akira Kakuto]

Dear Philipp,

As you can see, the kern feature does not have an apparent effect
in node mode, whereas base mode resembles the output of Xetex.

Here
   \testme {node_palt_nokern}
and
   \testme {node_palt_kern}
have different widths.

The version is
mtx-context     | current version: 2014.12.06 14:20

Am I misunderstanding something?

Best,
Akira