it definitely not a bug since i don't get this funny result with other teams. just these two so far. yeah the first one had funny formation but the second guy had normal formation, same as me. 4-1-2-1-2 had to change it after the second goal. and even with red card he kept attacking non stop, always one on one with keeper but couldn't score more apart from 2 60 min goals.
i think they found a flaw and using it as hack.
and i wouldn't know about the construction problem since i haven't been building anything for sometime now.
though i think the game has been hacked and is lagging full of bugs. many problems cropping up.