Forum:In Old world blues, I got a quest called Project X-13 redux quest, it can never be completed

When I have finished Project X-13 quest. I replay the last test, I got a quest called "Project X-13 redux" it told me to complete the test. I have completed it but the quest haven't finished. after I completed all 4 tests again, the quest still stucked there. Is there any fix for it?