I hinted a lowercase “m” that when the generated fonts are opened in Glyphs, the vertical hints are not displayed. If I open the fonts in another application the vertical hints are displayed. There are other glyphs with a similar design that behave the same way. Is this an issue with the hints? or Glyphs? I’m currently using Version 2.6.5 (1313). Thanks.
The hints could not be reverse-engineered back from the compiled font. Happens sometimes.
Are you reopening the font in Glyphs for testing purposes? That is not a reliable way of testing, because Glyphs is a font editor, not a font inspector. When you open a font, Glyphs has to interpret a lot of the information in the compiled font, e.g., the green/blue status of the point connections.