Removed volumes are still displayed on desktop
When I insert some device which has partitions and mount them, icon appears on desktop. However, sometimes there are two icons and one is never removed until logging out even if device is physically removed. System is installed using Calamares from systemd Desktop complete iso.
I find my self wondering is this is a bug at all.
Yanking external media without informing the system (unmounting) is very bad practice
Depending on how the device was mounted there may even be stale mounts in /etc/mtab
This seems more like a case for user education then a bug.
Light DEs like XFCE often just have a very basic mount/unmount mechanisms.