It’s more obvious on *batteries not included and 48 Hrs. because of the darker background, but even on lighter backgrounds it’s there as seen in 13 Going on 30 and 2001: A Space Odyssey.
I even took the background source file for 48 Hrs. and opened it in PhotoShop to change the levels to make obvious any subtle background noise or banding and there was some artifacts but nothing like banding or anything in the area of the left overlay.
The problem is clearly just that new overlay as the sidebar option are not impacted at all.
If there’s anything else you guys want me to trouble shoot let me know but I’m pretty sure that new overlay has a low level center bloom effect that causes the banding.