Deal with the bandits - Bug report

After completing "Deal with the Bandits" by killing the two male bandits and choosing to keep Alira alive, I found Oak still alive in his camp (Bug 1).
As I was unprepared to face him, he attacked me and I was killed. After resurrecting, I went back to his camp. Oak came out of his camp towards the waypoint, and I went in his camp. This made the camp doors close, trapping me inside and Oak outside (Bug 2).

The only way to get out, was to portal out of the area and return through the waypoint. When I returned again, Oak was standing ouside his camp, and I was able to speak with him again. He offered again to help him or kill him, but the options were greyed out (Bug 3). The problem is not solved when exiting and entering the game (Oak stays alive and cannot be attacked).

So I went to the Broken Bridge and found Kaitir (or something) also to be back alive (Bug 4). I killed him once more and received his loot again (except for the amulet).