That seems to be something new.
Did 6 sectors with ET past 10 days, didn't experience this, or see it happen to anyone. But I also only travel with one fairly small piece of hand luggage.
Did they want to put it in the cargo hold? Or they wanted to penalize you? On the contrary, it continues to annoy me how people bring too much and too large hand-luggage on the planes. But I did encounter a few times where staff asked people to hand over additional pieces of hand luggage at the gate, to store it in the cargo hold. But this was at out-stations, not in ADD.