My Sudo font family is a real bug magnet. In Glyphs 3.2, the advance widths of the proportional subfamily are all wrong, all at 256 units instead of their defined widths:
Both in static TTF and variable TTF export.
I’m controlling the monospacedness of the two families via CP isFixedPitch on the font and export levels. It seems the export level CP doesn’t override the font level CP …
Yes, this is the same I reported recently. It’s really annoying.
I think yours was the other way around.
I had another look and improved it a bit. Update is out (as cutting edge).