I’ve already fixed the font origin to point to Thin master (instance also present there).
Still, the exported font has “Regular” added to the family name. My question is, how do I export the font from Glyphs 3 without this style name addition? This must be possible as Glyphs 2 exports it fine.
Here’s two forum topics about the same problem:
https://forum.glyphsapp.com/t/variable-font-family-name/10703
https://forum.glyphsapp.com/t/postscript-family-name-in-variable-fonts-without-regular/10335