This isn't a bug, just poor game design. As soon as you get close to the bridge to Ketheric's town, the fight between Rolan and the shadows starts (they're near the docks under you). If you don't intervene right at that moment, he will die. The radius that triggers the event is very big so it's easy to trigger it without noticing. Triggering the event =/= entering the fight, so don't expect to enter turn-based mode automatically. You need to get close to the fight to join it (they start fighting without you). That means if you get close to the bridge then go do something else, Rolan will always die.
@Ruvahkiin
Can you describe what quest you are working on and what quests in Act 2 you have finished? Have you interacted with Rolan at all in Act 2?
I talked to him at the inn and then with Alfira and Bex. But in the diary of quests, don't appear that I talked to him. I load the game and I talk with him and Now the reference of Rolan appears...
The problem is that I have already explored almost 70% of the map and I have done several missions = 92h of total gameplay.
When I talked to him was the first time in the in... 72 hours.
I don't know if it's worth loading game and repeating 20 hours of gameplay... I read that Roland appears in act 3...
I found Roland dead exploring the map. AFTER, I see his holographic message in the inn.
Now, Appear in the map a mark of the position of Roland, but he is already dead...
And this mark don't dissappear. It's infuriating.