Issues

• [Bug]: An empty string inside a list is still read as null (#621 reproduces on 0.0.78)

  ThatOpen/engine_web-ifc#2244 · Filter by author ShaMan123 opened on Oct 5, 2026

• [Bug]: IFC4 IfcSurfaceStyleShading.Transparency is ignored - geometry colour alpha stays 1.0

  ThatOpen/engine_web-ifc#2229 · Filter by author adreamart opened on Sep 28, 2026
  1

• Degenerate half-space cuts with coarse TOLERANCE_PLANE_INTERSECTION

  ThatOpen/engine_web-ifc#2211 · Filter by author thbeu opened on Sep 22, 2026
  2

• [Bug]: GUID mapping leaks native vectors on success and failure

  ThatOpen/engine_web-ifc#2196 · Filter by author viktar-b opened on Sep 20, 2026

• [Feat]: Outline geometry

  enhancement
  ThatOpen/engine_web-ifc#2110 · Filter by author barvirm opened on Aug 14, 2026
  8

• [Bug]: Conversion never completes on a waffle/coffered slab — quadratic face matching in shell rebuild

  bug
  ThatOpen/engine_web-ifc#2097 · Filter by author amirmiz opened on Aug 5, 2026
  1

• [Bug]: IfcSweptDiskSolid imported with empty geometry (positions=[], indices=[])

  bug
  ThatOpen/engine_web-ifc#2075 · Filter by author johpil177 opened on Jul 23, 2026

• [Bug]: Multi-threaded init falls back to single-thread when web-ifc is loaded as an ES module (document.currentScript is undefined)

  ThatOpen/engine_web-ifc#2068 · Filter by author jurassicparkicecream opened on Jul 21, 2026
  1

• [Feat]: tessellation fine grained runtime control overriding CIRCLE_SEGMENTS

  enhancement
  ThatOpen/engine_web-ifc#2053 · Filter by author ShaMan123 opened on Jul 9, 2026

• IfcImporter wrong boolean operation output

  bug
  ThatOpen/engine_web-ifc#2062 · Filter by author ShaMan123 opened on Jul 7, 2026
  3

• [Bug]: GetFlatMesh/GetLine crashes with WASM memory errors on large Revit-exported IFC4 MEP models

  bug
  ThatOpen/engine_web-ifc#1999 · Filter by author mc-perst opened on May 19, 2026

• Bausoft CAD IFC 4 pipe not showing

  ThatOpen/engine_web-ifc#1974 · Filter by author HeyVico opened on Apr 29, 2026
  3

• [Feat]: incremental file reader

  enhancement
  ThatOpen/engine_web-ifc#1964 · Filter by author ShaMan123 opened on Apr 21, 2026
  2

• [Bug]: Indices in IfcArcIndex/IfcLineIndex in IfcIndexedPolyCurve are numbers, not IfcPositiveInteger

  bug
  ThatOpen/engine_web-ifc#1881 · Filter by author jonathan-merlet-ocl opened on Mar 3, 2026

• Material colors from IfcMaterialDefinitionRepresentation not resolved in geometry color output

  ThatOpen/engine_web-ifc#1833 · Filter by author andreabanci87 opened on Feb 9, 2026
  2

  

• [Feat]: Investigation of IFC-lite

  enhancement
  ThatOpen/engine_web-ifc#1826 · Filter by author barvirm opened on Feb 4, 2026
  1

• What is the expected time to index IFC semantic properties for large models using WebIFC?

  ThatOpen/engine_web-ifc#1816 · Filter by author sanraz299 opened on Jan 30, 2026
  1

• [Bug]: Inconsistent triangle winding order between Linux and macOS

  bug
  ThatOpen/engine_web-ifc#1811 · Filter by author noclone opened on Jan 28, 2026
  1

• [Bug]: "memory access out of bounds" during ifc to frag conversion

  wontfix
  ThatOpen/engine_web-ifc#1774 · Filter by author alexberd opened on Jan 8, 2026
  17

• [Bug]: Incorrect geometry generated (triangle sticking out)

  bug
  ThatOpen/engine_web-ifc#1677 · Filter by author mezlondr opened on Oct 29, 2025
  7

• [Bug]: Error rendering Ifc Advanced Face

  enhancement
  ThatOpen/engine_web-ifc#1666 · Filter by author jespa007 opened on Oct 20, 2025
  5

• Fragments: no indices provided to create the mesh.

  bug
  ThatOpen/engine_web-ifc#1560 · Filter by author ynnob opened on Jul 15, 2025
  2

• [Feat]: Default color for IfcType

  enhancement
  ThatOpen/engine_web-ifc#1504 · Filter by author MicolaL opened on Jun 30, 2025
  1

• [Bug]: Can not read model size >2gb in nodejs version @0.0.68 but older version 0.0.59 is ok.

  bug
  ThatOpen/engine_web-ifc#1503 · Filter by author RyugaRyuzaki opened on Jun 30, 2025
  5

• [Bug]: After writing an object to ifc, the material of the mesh object is lost when obtained through StreamMeshes.

  bug
  ThatOpen/engine_web-ifc#1502 · Filter by author Jenychen1996 opened on Jun 30, 2025
  2