Yury Yarmola

Probably it is this particular glyph. It is built using the COLRv1 composition operator COMPOSITE_SRC_IN, but "backend" is empty. It does not look good (font-side) and I am investigating it...

Right, thanks! Funny that in the sample above in the spec  They have unbounded gradient fill in "source" part of the composite operator while in the real font it...

> the fonttools subsetter stumbles over the the CPAL table Will check that, thanks! That happens with the original or modified font?

Some investigation: I checked how B (gid 13) is built and found that the original font has one of the gradients made like this: If I read [COLRv1 spec](https://learn.microsoft.com/en-us/typography/opentype/spec/colr#linear-gradients) correctly,...

That's the first gradient "shape" in B, easy to spot.

While I am a big enthusiast of the stroke-based features in font editors, I am not so sure about having it in the export format. Closed contours is one obvious...