Warlock – “Clan Leader” [Campaign 4, Mission 1]

I had a similar experience. I moved away from the portal and ended my turn... everyone started fighting each other... and the second-to-last player attacked me (but was already quite weakened). I defeated him with almost no losses, and then it was the last player's turn... and then he approached the dragons, and they let him pass O_o, and he ran for the ring. Of course, I caught up with him and killed him on the next turn, but is this a bug or what? (I just checked, and if I don't finish him off, he just grabs the ring and stands there; the mission doesn't end until you kill him :)) version 1.6

This is a really interesting version... for example, in the second mission for Inferno, where you have to reach the Griffin Necropolis, Erazeal (the second player) really rushes towards it, and if you don't manage to attack the necropolis's defender first, the mission ends.
(I played this mission on version 1.5, and Erazeal would run up to the necropolis and wait for me to approach :))