I’ve recently updated a typeface which uses a lot of reverse bracket layers to deal with strokes and slashes at heavy weights with a three master file (light, regular, black) and when exporting (as static OTF) in Glyphs 4 I received a warning that the glyphs that contained reverse bracket layers were incompatible. When I looked at the affected glyphs, the intermediate weights between regular and black were missing. This issue wasn’t present in Glyphs 3. I managed to fix the warning by simply switching the black master and alternates around for the affected glyphs, but now I can’t view the glyphs as hoped in the font view. Has anyone else experienced this in Glyphs 4?
Can you send me the .glyphs file in the state before you “fixed” it?