"Limited mode" in notification settings should show pup-up with results, when file is scanned trough context menu in Windows Explorer and block pop-up, when "new network" is scanned automatically. In principle is the same, as background scanning of files or websites and it should alert only, when is something vulnerable discovered.
So in short:
"Limited mode" should block offers, ads and unnecessary pop-ups like "new network" scan.
"Limited mode" should show pop-up with scan results, when I manually scan file/folder/drive in explorer context menu.