This was very annoying. It also blocked access to the buses, so people kept breaking through to catch their bus.
I got to the back of the line and rushed forward when another opened. One woman was ahead, but she needed such complicated help it took almost as long as if I hadn't gotten on the newly opened one. At least the clerk was pleasant, and I had the time. Some of those clerks are awfully nasty. If I would treat my customers like they do, I'd be fired in a jiffy.