Extrapolation preview don't match with generated font

The first an two last H’s are extrapolated.
The generated H is the last right.

Cheers
Edu


Do you have a Rename Glyphs parameter in your instance?
You can send me the file to res (at) this domain, and I will have a look.

Hi,

I don’t rename glyphs on this font.
Just sent the source file to your mail.

Cheers
Edu

It is because the crossbar component is scaled 180% in the first master, and 160% in the second, and upon export, it goes to scale down to something below 150. You are right that the preview is not accurate in this case.