I've just had a run with someone else and we sometimes got portals to the unknown. The issue is: It ALWAYs led to Destozuno. This was three or four times in a row. As I have already picked up her quest during a solo run before I could not pick up a new one and as I have not completed it I could not hand it in. My partner also was not very satisfied with always getting her.
Is this normal behavior?