Issues

• Nested composites with a per-master-varying 2×2 are decomposed differently from ufo2ft

  googlefonts/fontc#2154 · Filter by author cmyr opened on Sep 16, 2026
  3

• FeaMerge errors could be more useful

  googlefonts/fontc#2142 · Filter by author cmyr opened on Sep 11, 2026

• Optimize kerning tables by grouping by direction, then by script in subtables

  googlefonts/fontc#2112 · Filter by author madig opened on Sep 2, 2026

• Compile VFJ sources?

  enhancement
  googlefonts/fontc#2081 · Filter by author rsheeter opened on Aug 14, 2026

• Automatically set the overlap

  googlefonts/fontc#2061 · Filter by author MariannaPaszkowska opened on Jul 14, 2026
  1

• Compile DS+UFO fonts with non-identical (but compatible) per-master feature files

  enhancement
  googlefonts/fontc#2060 · Filter by author anthrotype opened on Jul 13, 2026

• Glyphs FEA predicate tokens: glyph-metadata attributes and nested boolean expressions

  googlefonts/fontc#2052 · Filter by author anthrotype opened on Jun 23, 2026

• fea-rs registers generated abvm/blwm under arab when a languagesystem arab follows those features

  correctness
  googlefonts/fontc#2030 · Filter by author anthrotype opened on Jun 4, 2026
  3

• Pass codepoints to GlyphData.xml queries for DS/UFO sources

  correctness
  googlefonts/fontc#2022 · Filter by author anthrotype opened on May 27, 2026

• fontc ignores declared filter ordering from source, runs propagateAnchors before decomposeTransformedComponents

  googlefonts/fontc#2020 · Filter by author anthrotype opened on May 26, 2026
  1

• Unnecessary glyph renaming

  googlefonts/fontc#2019 · Filter by author simoncozens opened on May 21, 2026
  1

• avar2

  enhancement
  googlefonts/fontc#2008 · Filter by author simoncozens opened on May 13, 2026
  1

• [propagate_anchors] incorrectly assumes base component references map 1:1 to ligature members

  correctness
  googlefonts/fontc#2007 · Filter by author anthrotype opened on May 7, 2026
  1

• Some fonts use FEA include for arbitrary string concatenation

  crater
  googlefonts/fontc#2002 · Filter by author cmyr opened on May 3, 2026

• fontc crashes on super bezier segments (3+ off-curve points before a curve)

  crater
  googlefonts/fontc#1997 · Filter by author cmyr opened on May 1, 2026
  2

• Support SFD?

  enhancementquestion
  googlefonts/fontc#1996 · Filter by author rsheeter opened on May 1, 2026
  5

• glyphs v2 sources with a "toggle" axis (to distinguish regular and italic)

  crater
  googlefonts/fontc#1994 · Filter by author cmyr opened on Apr 30, 2026
  1

• fontc computes axis min/max from masters only, ignoring instance positions

  crater
  googlefonts/fontc#1991 · Filter by author cmyr opened on Apr 29, 2026
  1

• fontc drops point axes with non-identity user-to-design mappings

  crater
  googlefonts/fontc#1990 · Filter by author cmyr opened on Apr 29, 2026
  2

• subtle cu2qu rounding issue

  crater
  googlefonts/fontc#1981 · Filter by author cmyr opened on Apr 25, 2026
  1

• Glyphs v2 "Custom" (XXXX) point axis at non-default position

  crater
  googlefonts/fontc#1958 · Filter by author cmyr opened on Apr 15, 2026
  3

• [fea-rs] Support inline alternate substitution in contextual rules

  googlefonts/fontc#1925 · Filter by author anthrotype opened on Mar 13, 2026

• [otl-normalizer] should filter IVS regions used by each GPOS section (kern vs mark vs cursive)?

  googlefonts/fontc#1921 · Filter by author anthrotype opened on Mar 11, 2026

• [COLR] IR stores resolved colors instead of palette indices, lossy for duplicate CPAL entries

  googlefonts/fontc#1905 · Filter by author anthrotype opened on Mar 4, 2026
  5

• Support COLR compilation from UFO/.designspace sources

  googlefonts/fontc#1903 · Filter by author anthrotype opened on Mar 4, 2026
  1