Issues

• Circle.inside ignores the supplied tolerance

  fonttools/fonttools#4317 · Filter by author xiehuanyi opened on Oct 14, 2026

• Negative lazy array indices decode and cache the wrong record

  fonttools/fonttools#4315 · Filter by author xiehuanyi opened on Oct 14, 2026
  1

• pairwise emits a bogus pair for empty iterators

  fonttools/fonttools#4307 · Filter by author xiehuanyi opened on Oct 14, 2026

• UFO filename collision checks lose names from iterator inputs

  fonttools/fonttools#4303 · Filter by author xiehuanyi opened on Oct 14, 2026

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

  fonttools/fonttools#4301 · Filter by author xiehuanyi opened on Oct 14, 2026

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

  fonttools/fonttools#4173 · Filter by author IvanaGyro opened on Sep 8, 2026
  8

• curveCurveIntersections() segfaults with extreme finite coordinates

  fonttools/fonttools#4166 · Filter by author marinelay opened on Aug 30, 2026

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

  fonttools/fonttools#4164 · Filter by author har7an opened on Aug 29, 2026
  2

• [subset] Implement VARC subsetting

  fonttools/fonttools#4148 · Filter by author behdad 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 · Filter by author yChenMonotype opened on Jul 17, 2026

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

  fonttools/fonttools#4120 · Filter by author TakWolf opened on Jul 2, 2026
  1

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

  fonttools/fonttools#4086 · Filter by author simoncozens opened on May 6, 2026
  6

• Add support for IFT and IFTX tables

  fonttools/fonttools#4070 · Filter by author wmedrano opened on Mar 22, 2026
  3

• [ufoLib] Needless writing of metainfo.plist

  fonttools/fonttools#4068 · Filter by author justvanrossum opened on Mar 17, 2026
  10

• Traceback in "feat" table in macOS system font

  fonttools/fonttools#4021 · Filter by author justvanrossum opened on Dec 28, 2025
  5

• Segfault in alpine image

  fonttools/fonttools#3998 · Filter by author SteinRobert opened on Dec 8, 2025
  11

• Improve typing of ttLib

  fonttools/fonttools#3993 · Filter by author madig opened on Dec 2, 2025

• [varLib.interpolatable] documentation/UX issues

  fonttools/fonttools#3984 · Filter by author frankrolf opened on Nov 13, 2025
  6

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

  fonttools/fonttools#3965 · Filter by author caizixian 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 · Filter by author eweracs 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 · Filter by author arrowtype opened on Sep 16, 2025

• Add subfamily renaming support to rename-fonts.py snippet

  fonttools/fonttools#3933 · Filter by author caizixian opened on Sep 16, 2025
  4

• [varLib.instancer] Does instancer trim post-instancing unreachable glyphs? Should it?

  fonttools/fonttools#3931 · Filter by author behdad opened on Sep 11, 2025
  2

• "support" attribute to designspaceLib SourceDescriptor

  fonttools/fonttools#3929 · Filter by author LettError opened on Sep 10, 2025
  23

  

• [IFT] Upcoming Incremental Font Transfer tables IFT and IFTX

  fonttools/fonttools#3922 · Filter by author RoelN opened on Aug 28, 2025
  1