Where live demo go?

Not sure if it’s the right category, but I’ve noticed that the docs changed.
I was wondering, the demo on the side ( the phone demo ) isn’t scrolled together with the docs, so I can’t see the options anymore.
And in many pages - there’s no “phone demo” at all …

Now I need to have a codepen, to copy paste examples from the docs in order to see what it does
Is that going to change back to the way it was ?

Hello,
to follow because the demo on smartphone was useful