Just got another duel bug. I clicked a formation, spam clicked to use health/energy pots for heroes. Then it gets stuck on health pot for avalon on my screen, can't click it, can't exit it. can't do anything but watch as the countdown expires and I lose a duel to someone 300k power lower than me.
I also encountered this bug several times. Both in my favor and in my opponents favor.
- It generally happened when I shuffled around troops when there is still time left. Most often shortly before the timer runs out. - But this bug also occured to me when just waiting for the timer to end without doing anything. - The bug affects the attacker [more often] (I can't remember ever being kicked out of a duel when someone dueled me).
What I learned from it?
If you want to attack someone: - Always have atleast 1 PvP formation ready to deploy instantly and then press the ready button fast.
If you are being attacked: - Play the odds of your opponent experiencing the bug. When I plan to only use my heroes I always wait the timer out.