I never run into this in the US (even under-construction airports only add ~10 minutes to security lines), but I’ve had it happen a bunch in Europe. The worst was a flight from Dublin to the US, where I didn’t realize I needed to go through (slow) security plus (even slower) US passport control plus another layer of security to get onto the flight. I still made the flight but it was stressful.
I never run into this in the US (even under-construction airports only add ~10 minutes to security lines), but I’ve had it happen a bunch in Europe. The worst was a flight from Dublin to the US, where I didn’t realize I needed to go through (slow) security plus (even slower) US passport control plus another layer of security to get onto the flight. I still made the flight but it was stressful.