Never seen that before but could have something to do with loading all the flights in SHARES.
As for B777 vs 777Q....at least one of those days the plane will be the new config. Who knows which one at this point considering the data is off on unitedcargo.com. The seat map on United.com doesn't mean anything. My recent DXB-IAD flight switched to the old "B777" seat map 5 days before the flight but unitedcargo.com always showed it as a 777Q new config. Seat map on united.com finally went back to the new config just before T-24h.
-RM