Honestly dunno if it has been posted already. But 14 pages are too much for me to read.
I found a very annoying and gamebreaking bug. During fight sometimes the game doesn't aquire ur commands like the server was lagging. So u are stuck with infinite ap, u can move around, u can cast spell and attack but dmg won't go off neither cc effect and u can't end turn too. Apparently alt tabbing and waiting up to 5 min solve this problem.