Developers are removing the option to show icons, folders and files on the GNOME desktop.
OMGubuntu: If you’re among the many GNOME Shell users who like to put icons on the desktop, brace yourself for change
This post, GNOME 3.28 Removes Option to Put Icons on the Desktop, was written by Joey Sneddon and first appeared on OMG! Ubuntu!.
The feature, part of the Nautilus file manager, is said to be hindering development.
All Sources: OMG Ubuntu Linux Today