I've noticed twice now, if I'm in a squad and we complete the oroworm. We then farm materials/intrinsics. Then I've dropped group and it takes me back to the end fight of the oroworm. But you can't damage it. So you are forced to quit the game for it to say mission failed.
Also, on one of the side quest. You have to pick up 4 yellow things. Only 3 spawn. I've tried this side quest multiple times