In Unity 2021.1 or higher, is anyone else getting graphical artifacts when a canvas uses overlay and a UI object is selected?

when the canvas is set to overlay - or when in prefab preview mode, I’m getting a reversed representation of the UI graphics I’m adding or have added. This reverse representation appears to take up the upper left-hand side of the screen.

This is an empty project - barring Mirror being added, and some unimplemented scripts for later use.

This also only appears to affect unity 2021, as I do not see the artifacts on earlier versions.

Is anyone else getting these artifacts or is it just me?

Ok, slight correction, canvas is not required. The graphical glitch appears when a grid is selected as well…