A trick which works for me, not 100% sure it will work for others, looks like a bug rather then trick: when you lon in and get code window, just quit launcher, and start again. For me after 4-8 restarts, there is no window code...Got really no idea why, but it worked few times, if im correct highest was 16 restarts, the day when we had maintenance, and every one had a problem with damn codes.
Cant guarantee it work for all, as i have no idea really, but why not try it... May help at least few people.