Ok, here what i've experienced. When i attack a group of troll with chain attack activated, the archmage throws the lightning and it goes well. It chain to nearby troll.
Then i keep attacking, the lightning is showed up, BUT it doesn't do chain, it just attack primary target. I think it was bug, but after several second, suddenly, there are troll die nearby the primary target. So, i assume that it just doesn't display the lightning, but it actually do the damage.
Then i keep attacking, the lightning is showed up, BUT it doesn't do chain, it just attack primary target. I think it was bug, but after several second, suddenly, there are troll die nearby the primary target. So, i assume that it just doesn't display the lightning, but it actually do the damage.
