Incorrectly displayed 3mf file

[prokoudine]

Here is a 3mf file:

PiCam3_FrontHousing_Rev2.zip

Here is how it's rendered by Mayo:

The same file rendered by https://github.com/kovacsv/Online3DViewer:

When you load the OBJ version in Mayo, it's fine:

[HuguesDelorme]

While still weird, this looks a bit better on Windows:

Notice that CAD Assistant fails to load that file:

I suspect the Assimp 3MF importer has a problem, or maybe this file isn't valid. This is worth trying to check with assimp_qt_viewer