Incomplete localized `name` table for VF, and other problems

Not sure if it is a problem with the build process or the build program itself, but the `name` table in VF left traces of the starting ExtraLight in the `name` table as such (exported with `ttx`):
```

思源黑體 香港 VF


Regular


思源黑體 香港 VF


ExtraLight

```
There is no `name` ID = 16 in the font file:
```

http://scripts.sil.org/OFL


ExtraLight

```
and there is no localized name for `name` ID = 265-279.

Could it be related to why SHS does not display all weight instances in Windows (including no Prev/Next button when previewing)? Source Sans and Roboto VF do appear to be able to display all weight instances in Windows.