I just experienced those! In March I was flying MUC->SFO (the day before Trump "closed the borders", lucky timing for me). Due to COVID the plane had been downgraded from an A380 (which I was excited to try out, since I'd never been on one) and instead was a smaller Airbus which was also new to me. First time I went to the bathroom I was totally caught off guard. No idea this was a thing, had never even heard of it.
So novel that I took pictures to show my friends when I got back in the ground :-)