I presume there is some bug in scanning individual file or folder in malware bytes scan. It some times load the 3 ring action tabs, update, prescan and file scan. But mostly i experienced a bug, that even though it is available in right context menu, scanning of individual file loads 5 ring action tabs. update, prescan, and all scan including heuristic scan screen.
One would like to scan individual files after downloading to be scanned with