I experience it only on bezel / marquee scanning, sidearts don't seen to have that issue, so i guess its the scanning through glass as the print is on the back of the glass..
Also it makes the scan blurry due to the extra distance through the glass to the actual art.
Also seen on Muddy's scans, its the surrounding, not the actual art he scanned, so that must be distance related
Glass Bezel:

Sideart:

funny side note, i just see that the grider segments are also different some time..
never seen that detail before
