there is a bug that causes bounties to reset.
i noticed it with a bounty that had me kill 3 plagued wolfs in nameless pass, killed 2/3, could not find the 3rd one. left the area, came back later and the bounty was reset to 0/3 progress.
and a user on discord reported that a challenge where u had to give resources was reset to 0 and all resources were gone after logging out and back in:
