Ubuntu 18.04 - GNOME - Desktop icon conflict


I was testing/using Ubuntu 18.04 when I noticed something odd. I had a few
files on the desktop. I plugged in a USB flash drive and an icon for the
drive appeared on the desktop, That is ok _except_ that the icon was placed
over some existing icons.

I've had a quick look on and not found anything. Has
this bug been reported before or shall I file a new bug report?

Thank :)