Godot HTML5 export messes up models/z-buffer but mac export works fine

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:bust_in_silhouette: Asked By David Saltares

Video demonstration: Loom | Free Screen & Video Recording Software | Loom
Source code: https://github.com/dsaltares/house-tour

The above project simply has a small environment containing a 3D model of a house built in Blender and exported with the Better Collada Exporter. The user can move around the environment.

It works perfectly fine on desktop (mac os) but the models completely break on the HTML export. You can see it for yourself on the video, try it here https://saltares.com/house-tour or check out the repo.

I am using Godot 3.2.3 stable.

Do you know why this may be happening?