There was such a failure today, why was it 100% and after it was turned off it protected 98%? In the battle, several heroes died after the connection is all alive.
FWIW, message says "connection is not established, check network status and try again"
It is not a good idea to do GW on iffy connection. And it is not a bug. If client managed to complete a fight but could not communicate it to server, then server never saw the completion.
Name: Rusty (Rustyx in game)
Guild title: resident wisenheimer.
Line ID: Rustytroll (big shock there, eh?)