VF export fails with this message:
Problem generating Feature Variations
In glyph: j.cv03: -[NSTaggedPointerString objCType]: unrecognized selector sent to instance 0xac9f73c16991f5e0
The error appears with this file: https://github.com/jenskutilek/sudo-font/tree/master/src/Sudo.glyphspackage – it used to work in build 3208, haven’t tried with builds 3209–3213.