This is still an issue for me. I fight the orrian scout and the cutscene plays. Forgal tells me to meet him at Claw Island and swims upwards through the ceiling.
I’m unable to complete this quest. I have attempted it 5 times now.
I have tried swimming with Forgal and not getting in front, I have made sure that he is not in combat when I trigger the cutscene all to no avail