I just started playing the new definitive edition, and I ran into a pretty annoying glitch. I wasn't able to see the smoke cloud in ruined castle. It made it pretty annoying that I wasn't able to see who I was able to hit. It later happend again at Amadia's sanctuary.
https://youtu.be/3CqxzEZG6Zg
I don't know if the mistake is on my end, but I have nearly 600 hours in the game, and I have never seen it before.
