After experiencing Windows 10 multi-monitor icon plague, I thought I'd setup DisplayFusion's icon layout, which seemed straightforward enough.

Though I've discovered that selecting the icon profile under Monitor Configurations, causes the icons to jump screens - invoking this on its own works, invoking this under Monitor configuration causes it to malfunction.

Anyone know what is causing this, and how I might fix it?

To update, it looks like this was caused by a small utility called 'Fences' by Stardock, which comes with screen and icon manipulation features - everything appears to have come back to normal after ununinstalling it.