[amadeuspagel]

I wonder whether it was a mistake to separate this feature from a standard selection.

I don't know how to design it separately. The default is that selections are blue and fragments are purple, but if you choose different colors for both, in line with your color scheme, how will people know which is which? I guess you can still choose different tones of blue and purple.

Why shouldn't selecting text automatically update the address?

[V__]

Some sites do: The Wayback Machine changes the url if you change the selection.