Thank you for your quick answer.
First: let me correct my tone, I didn’t want to sound sarcastic, I was genuinely curious… I’m starting a new thread following your advice.
I checked on the file and found the layer on, are you referring to something else…?
I thought it might have to do with the
Layout and layer detail information panel, but in this small file there is no Layout setup.
So I went back to the big file where I have the whole model (the one I shared here only contains the blue exported volume), and fiddled with the layout, but there the layer was active, and the issue was still the same…
I’m not sure I understand fully: I should go and “recover a previous version” of the file through my back-up system until I find a version where the objects were displaying correctly? Or should I try to install Rhino 6…?
Either way, I’m not sure I know how to turn off a viewport for a layer on the modelling window. I know it can be done in the layout window, but the objects show up fine there…
… Finally, I seem to remember I once managed to get the
Layout and layer detail information panel showing up in the main window, as I wanted to see different things in the respective views, but I can’t get it to show up anymore…