Issues

Issues

• designspace: accidentally(?) accepting multiple <rules> elements

  fonttools/fonttools#4409 · opened on Nov 11, 2026

• pyftsubset should preserve all nameIDs by default

  fonttools/fonttools#4400 · opened on Nov 11, 2026

• DSIG/gasp: bare asserts and unchecked reads in decompile silently accept malformed tables under -O

  fonttools/fonttools#4377 · opened on Oct 28, 2026

• glyf: malformed glyph flag/coordinate data raises raw IndexError/struct.error instead of TTLibError

  fonttools/fonttools#4375 · opened on Oct 28, 2026

• Circle.inside ignores the supplied tolerance

  fonttools/fonttools#4317 · opened on Oct 14, 2026

• Negative lazy array indices decode and cache the wrong record

  fonttools/fonttools#4315 · opened on Oct 14, 2026
  1

• pairwise emits a bogus pair for empty iterators

  fonttools/fonttools#4307 · opened on Oct 14, 2026

• UFO filename collision checks lose names from iterator inputs

  fonttools/fonttools#4303 · opened on Oct 14, 2026

• svgLib path tokenizer splits valid SVG numbers and rejects arc newlines

  fonttools/fonttools#4301 · opened on Oct 14, 2026

• [ttLib] sstruct-assigned table fields are invisible to type checkers (e.g. font["head"].fontRevision)

  fonttools/fonttools#4173 · opened on Sep 8, 2026
  8

• curveCurveIntersections() segfaults with extreme finite coordinates

  fonttools/fonttools#4166 · opened on Aug 30, 2026

• [varLib.instancer] modifying wdth axis creates bold font variants

  fonttools/fonttools#4164 · opened on Aug 29, 2026
  2

• [subset] Implement VARC subsetting

  fonttools/fonttools#4148 · opened on Aug 10, 2026

• IFT table bug - Incorrect lastEntryId initiation and missing implementation when entry Id could be a byte string in addition to integer

  fonttools/fonttools#4134 · opened on Jul 17, 2026

• [ttLib] Improve support for bitmap-only sfnt / X11 OTB fonts with zero-length glyf table

  fonttools/fonttools#4120 · opened on Jul 2, 2026
  1

• [varLib.instancer] --update-name-table should search fvar instances as well as STAT

  fonttools/fonttools#4086 · opened on May 6, 2026
  6

• Add support for IFT and IFTX tables

  fonttools/fonttools#4070 · opened on Mar 22, 2026
  3

• [ufoLib] Needless writing of metainfo.plist

  fonttools/fonttools#4068 · opened on Mar 17, 2026
  10

• Traceback in "feat" table in macOS system font

  fonttools/fonttools#4021 · opened on Dec 28, 2025
  5

• Segfault in alpine image

  fonttools/fonttools#3998 · opened on Dec 8, 2025
  11

• Improve typing of ttLib

  fonttools/fonttools#3993 · opened on Dec 2, 2025

• [varLib.interpolatable] documentation/UX issues

  fonttools/fonttools#3984 · opened on Nov 13, 2025
  6

• fonttools varLib.instancer --update-name-table doesn't seem to handle Italic

  fonttools/fonttools#3965 · opened on Oct 24, 2025
  2

• [feaLib] How to best reduce interop problems caused by extensions to afdko OpenType Feature File Specification

  fonttools/fonttools#3953 · opened on Oct 8, 2025
  69

• [designspaceLib] Proposal: public.skipExportGlyphs should be possible to set in UFOs, not only designspace, even when compiling from a designspace

  fonttools/fonttools#3935 · opened on Sep 16, 2025