OK, I see. I hardly ever use those two, Device view and Preview, so I hadn't noticed it. Now I have checked, though, and found that the two previews cannot be used for a whole series of templates, and components too. It has been some 'off and on' with this throughout the years. I will report it.
Ha en riktig god dag!
This site was made before we were able to create components through the app:
Component sharing for RFF, RBB, RSD and SD: https://eikweb.com/sharing/
My work in progress right now:
Components for the same as above + HTML Editor: https://mock-up.coffeecup.com