Desktop icon don't stay where I put them...
OS 10.11.6.
Most icons will stay where I put them but others will jump somewhere else.
To be fair it seems that there are spots several on my desktop that don't allow icons and when I try to put one there it jumps somewhere else.
I have even moved and icon and then tried to return it to it's original spot and it jumps away.
Advice?
iMac 21.5″, OS X 10.11