Shadow on edges of screen - MBP 14" M1 Max 32Gb RAM, 24 GPU
There is a ¼ inch (3-4 mm) dark shadow on the left, right and bottom edge of the display. It contrasts most noticeably on a white background like this website, or a white keynote / canvas in Photoshop. It is visible on all levels of screen brightness. What is this? I've owned 20 or more Mac laptops, and I've never seen this on the others. Help appreciated.
Thanks,
MacBook Pro 14″, macOS 12.0