Take a look at this operational notice to the cabin crew. Apparently, the printed on-board menus are wrong and therefore passengers aren’t getting what they suppose to have for breakfast, lunch or dinner. Nevertheless, due to costs, the company has decided not to reprint, so it is up to the crew to cover for the inconvenience.
This a good example where systemic flaws are acknowledged but are left to the crew to deal with. While getting something different to eat then expected doesn’t hold a great risk, it might aggravate situations with difficult passengers and it puts an extra burden on the crew which can easily be avoided.