This is "mobile-first" mentality in a malignant retroactive form, where it is taking away functionality and behavior that is already established in the desktop environment to better match user expectations set in the mobile space.
Mobile browsers often elide the protocol and trivial hostnames from domains in order to economize on precious screen space of phones. Desktop browsers do not face the same constraints. A desktop browser can play to the strengths of desktop computing—taking a "desktop-first" point of view—and display the full URL with the abundant space available. See Firefox's display of the full URL with a highlighted color for the domain. Alternatively, they can be made subservient to mobile and adopt conventions established from constraints that do not exist in the desktop space.
Mobile-first is frequently damaging to new desktop software projects, but in my experience it's atypical for mobile limitations to be back-ported to established desktop software.