Comment # 3 on bug 1004965 from Dominique Leuenberger

(In reply to Bj�rn Lie from comment #2)
> (In reply to Gerald Pfeifer from comment #1)
> > It appears this only happens for Wayland sessions, not classic X ones.
> 
> Correct, legacy functionality like desktop or tray icons are not supported
> in GNOME Wayland, nor does upstream have any plans of porting them to
> wayland.
> 
> Users who want this, are advised to use gnome-desktop in xorg or
> gnome-classic (for Leap 42.2 SLE-classic is even available).

With this I think the bug can be closed as UPSTREAM/FEATURE...

The xorg session is still available; even though Wayland is becoming
increasingly more interesting