I highlighted a file on my desktop and under view, I clicked "snap to grid" and the desktop reverted to how it was.

A suggestion by my son.


OS 10.14.6 iMac (Retina 5K, 27", 2017, 3.4 GHz Intel Core i5, 24 GB RAM, 2400 MHz DDR4. SuperDuper. 1 TB Lacie HD, Noise Ninja.