I thought the windows all dropped when you pressed unlock and held the unlock button down too long. When you double lock it and continue to hold the lock button down any open windows go back up. If I remember correctly?
Tuther day pressed double open sequence to open all windows as car hot inside. Messing about in boot and the little bugger locked me out with all windows open. Good job I hadn't thrown keys on drivers seat(and not opened windows)I always keep them on me until actually sat in motor and ready to drive.