I got reported that this old bug is still haunting returning players to Planet Cyrene, so i decided to bring back the fix for it suggested by Cyrene's Dev Kris:
- remove and pick up them again if you like those missions
- All Ranks of the Dire Weed Chain Missions
- A.R.C. Challenge - 100 Mang Changs
- of course don't delete Changs and Weeds same time, start with mission you are less deep into it, and test if it helped.
Let me know in comments or in game if this helped you.