Missing elements Visualizing IFC

[MiquelRecloud]

Describe the bug 📝

I’ve created a simple React app to visualize IFC files using the Open BIM Components (OBC) library. However, I’m experiencing issues where some IFC elements are not being displayed correctly.

To help illustrate, I’ve included some comparison screenshots below, showing the actual and the expected output:

I reached out to the engine_web-ifc directly through this issue: ThatOpen/engine_web-ifc#1092 . Based on their demo viewer, the models appear correctly, suggesting the problem may be specific to my React implementation or OBC configuration.

I’m unsure if the issue stems from a misconfiguration on my part or a bug in the OBC library. Any guidance or suggestions would be greatly appreciated!

Thank you for your help!

Reproduction ▶️

https://github.com/mikisf/ifc-viewer

Steps to reproduce 🔢

1. Run npm start
2. To see the other IFCs:
   2.1. Go to src/App.js
   2.2. Change the 30th line: const file = await fetch(${process.env.PUBLIC_URL}/ifc1.ifc) chaning the url to if2.ifc and ifc3.ifc

System Info 💻

System:
    OS: Windows 10 10.0.19045
    CPU: (16) x64 AMD Ryzen 7 5800H with Radeon Graphics
    Memory: 4.41 GB / 15.35 GB
  Binaries:
    Node: 20.17.0 - C:\Program Files\nodejs\node.EXE
    npm: 10.8.2 - C:\Program Files\nodejs\npm.CMD
  Browsers:
    Edge: Chromium (128.0.2739.42)
    Internet Explorer: 11.0.19041.4355

Used Package Manager 📦

npm

Error Trace/Logs 📃

No response

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