We have a simple QtQuick application using ArcGIS Runtime for Qt 100.6 on Windows 10. The application queries ArcGIS Online for portal items representing web scenes. For some web scenes the "
LoadStatus::Loaded" event is raised and the scene view navigates to the area of interest, but the scene layers 3D features are not displayed. No exception is thrown nor any warning is logged.
Is it possible to narrow it down, e.g. create verbose logging output?

Sample Scene which is not working, but looks fine in the web-based scene viewer:
https://www.arcgis.com/home/item.html?id=cdb6b0fb90284e0ebd7cf8a7823513c8