the fact that the "desease" has only been found for a short time doesnt mean people didnt know there was one.
Exactly what i've been saying in my last few posts if anyone cared to read them. And actually the Sheild bug (if you are aware of what fixing it does), IS game breaking, tottaly and utterly as it overpowers cav, makes spears pointless and severly nerfs sword and sheild units as well as apparently ovepowering Archers in general.