Haitch
notice some very big bags being allowed through secrity these days that are obviously bigger than the max dimensions... lack of consistency in many cases.
Yes, highly annoying. I saw this on my last FR trip (Sweden back to UK) but this is just a variable that you cannot rely upon yourself!! Have you read the small print if they decide to implement their own regulations about hand baggage?
So, try and ignore the people who do it and get away with it.