I’m confused by the fact that Ctrl + A (SelAll) selects objects hidden in detail. In Model View, SelAll only selects visible, unlocked objects.
This selection method does not select objects on layers that are hidden in detail.
Rhino 8
There is also an issue with the window selection in Rhino 9 WIP. Window selection selects invisible objects. In Rhino 8 it doesn’t work this way.
This is the same behavior in 7. Ideally in Hide Objects & Hide in Detail would have the same selection behavior, but I can see how this could be challenging to devs.
Not seeing anything in the youtracks, i’ll start a feature request to see what we can do in Rhino 9.