Starting in early 2021, Amazon stopped displaying competitors on their own stand-alone page (image 1 below) and they are now displaying competitors only on a sidebar (image 2 below). Everything on the new sidebar display works the same as the old dedicated page display.
Image 1: Old Style Competitors Screen
Image 2: New Competitor Side Bar
Why is my "How Many" feature to view competition not working?
How come I can't see the competition?
Why can I not open up a separate competitors page on the listing anymore?