So as a general rule before looking at the 3d view, one should have the edge cut. It is, however rather interesting that I made another project with the nano template but in that case I made no modifications to the footprints. The viewer showed all the components.
In any case, I will add an early edge cut before using 3d view.
Without edge cut 3D view not shows PCB itself.
Look at your picture. For me if I imagine PCB being under this big footprint then it seems for me that all resistors you have float over PCB itself. I supposed that may be they have wrongly set Z offset but didn’t want to write it before seeing the picture with PCB at it.
I even don’t know if it is a bug. I suppose PCB 3D view is not expected to work properly without PCB shape being defined.
Probably no one have checked how 3D view behaves without PCB as no one uses 3D view without it.
no edge cut, no show component. Maybe someone can try using the nano template with the component I listed above and figure out what is going on rather than relying on one with limited knowledge such as I.