Unknown image in my Layout

Question

Using ArcGIS Pro, I don't know what an image is that I find in my layout, nor how to remove it. I am not permitted to paste it here for you to see so I must describe it...

It has a small black square dot in the middle surrounded on four sides (left, right, above, and below) by short black lines. There is also a yellow hallo around each of these 5 black components. It seems to be located in a random spot in the layout and I cannot select, move, or otherwise affect it. It does not change size when zooming in or out of the layout.

What is it and how do I remove it?

Thanks

DavidPike · Answer

have you got another Map Frame?  Could maybe be an extent indicator linked to that other frame.
https://pro.arcgis.com/en/pro-app/latest/help/layouts/extent-indicators.htm

BarryNorthey · Answer

You might start by turning Layout elements on and off one at a time in the Contents pane of the Layout. If an element disappears, that is the culprit.