ZC 1.5.7b, PHP 7.4, Edit Orders, Image Handler 5, Zen Colorbox

I was looking at my store's Admin "Who's Online" and saw a customer had several items in his cart under "Visitors Shopping Cart" which shows on the right hand side of the page. Clicked on one of the items listed there and it brought me to a blank Admin page with only the top header shown (Configuration, Catalog, etc)

The link was like this:

https: // MYSTORE. com/MYADMIN/index.php?cmd=product&cPath=4_8&pID=1018

I could still tell what items he had in his cart just by the titles, and could find them in my store by running a regular search.

Not sure if this is a bug in the software or a configuration issue with my site but figured it's worth reporting.

Thanks, Ted