Glad I'm not the only one having this issue... https://askubuntu.com/questions/465627/desktop-icons-off-screen/1135079#1135079
Seems the answer is 'deal with it', I've tried looking for an actual bug report for the issue, but haven't seen one, I may report so later.. but here is the solution for now...
I found the fix is extremely simple.
Open the file manager and navigate to the desktop folder located in your Home folder. (The file manager will show all your desktop icons there)
Now simply drag and drop the icons you need moved from the file manager to the place you want on your desktop.
Instead of duplicating the icons, it will simply relocate the existing ones to where you want.
by: g1i1ch on ask ubuntu