Issues

• Layers: imported layers override the importing layer, and nested imports are federated twice

  buildingSMART/IFC5-development#144 · Filter by author GeneralPawz opened on Oct 3, 2026

• Imports: integrity is never checked, and its format is undefined

  buildingSMART/IFC5-development#143 · Filter by author GeneralPawz opened on Oct 3, 2026

• Composition: a reference to a non-existent node composes as an empty node

  buildingSMART/IFC5-development#142 · Filter by author GeneralPawz opened on Oct 3, 2026

• Validation: Blob is a declared dataType but every Blob value is rejected

  buildingSMART/IFC5-development#141 · Filter by author GeneralPawz opened on Oct 3, 2026

• Composition: reference cycles through head/child paths are not detected (stack overflow)

  buildingSMART/IFC5-development#139 · Filter by author GeneralPawz opened on Oct 3, 2026

• CLI: --no-validate cannot bypass validation — IfcxLayerStack always validates during Build()

  buildingSMART/IFC5-development#133 · Filter by author mikan-atomoki opened on Jul 23, 2026
  1

• Composition: null deletes children/inherits but not attributes

  buildingSMART/IFC5-development#132 · Filter by author mikan-atomoki opened on Jul 23, 2026
  3

• IFC5 Proposal: Digital Twin External Reference

  buildingSMART/IFC5-development#127 · Filter by author Isaina opened on Jun 12, 2026

• IFCX viewer: rendering validation errors via innerHTML allows XSS from IFCX content

  buildingSMART/IFC5-development#125 · Filter by author louistrue opened on May 19, 2026
  2

• Is the double-wall.ifcx file OK?

  buildingSMART/IFC5-development#124 · Filter by author HavardLine opened on Apr 29, 2026
  2

• Linked data compatibility or extensibility

  WGI
  buildingSMART/IFC5-development#123 · Filter by author Drshelden opened on Mar 18, 2026

• ifcx schema vs JSON-schema

  schema
  buildingSMART/IFC5-development#74 · Filter by author janbrouwer opened on Jul 2, 2025

• Class definition in the IFC schema

  schema
  buildingSMART/IFC5-development#73 · Filter by author atomczak opened on Jul 2, 2025
  1

  

• Properties of a class

  schema
  buildingSMART/IFC5-development#72 · Filter by author atomczak opened on Jul 2, 2025
  4

  

• Numeric precision

  buildingSMART/IFC5-development#69 · Filter by author atomczak opened on Jun 27, 2025
  9

• path pattern : regular expression vs. examples

  schema
  buildingSMART/IFC5-development#63 · Filter by author Airy59 opened on Jun 27, 2025
  5

• [ How to find the actual path of a node ]

  buildingSMART/IFC5-development#56 · Filter by author michelangelo-acca opened on Jun 23, 2025
  1

• inherited children mesh nodes with same path

  buildingSMART/IFC5-development#54 · Filter by author michelangelo-acca opened on Jun 16, 2025
  9

• Viewer didn't load the model --> Should imports, data and schemas be optional in the schema?

  needs decisionschema
  buildingSMART/IFC5-development#53 · Filter by author youshengCode opened on Jun 16, 2025
  3

• Schema wishlist

  schema
  buildingSMART/IFC5-development#51 · Filter by author aothms opened on Jun 14, 2025
  2

  

• Optional attributes

  enhancement
  buildingSMART/IFC5-development#45 · Filter by author michelangelo-acca opened on Jun 12, 2025
  4

• EXPRESS functions and rules, and their successors

  schema
  buildingSMART/IFC5-development#44 · Filter by author Airy59 opened on Jun 12, 2025
  10

• Material simplification

  buildingSMART/IFC5-development#31 · Filter by author michelangelo-acca opened on May 22, 2025
  8

• Technical feedback on IFC5 development - Modularization and structural improvements

  buildingSMART/IFC5-development#5 · Filter by author buildingSMARTSpain opened on Dec 5, 2024
  13

• Native IFC and asynchronous workflows

  buildingSMART/IFC5-development#2 · Filter by author brunopostle opened on Nov 15, 2024
  45