Picking objects (ray-casting) is only wokring on simple geometric forms

There has been a bug in version 6.4.0 where the ray casting did not work at all even in the official picking example.

This bug was "partially" fixed as ray casting only works with simple geomteric forms.

Replicating the bug is fairly simple.

You can download any 3D model avaible online, convert it with BALSAM and then load it.

as an example: https://sketchfab.com/3d-models/base-yrs-25c68dc285aa42a7941f2cb7a2df5b3d 

The hit-box (Only area where an object-hit occur) is outlined in red. The hit-box size is variable from one object to another. Some model contains small islands of hit-boxes.