Hmm odd, passing along. Out of curiosity is it possible that they didn't end because the timer was still ticking down? Not that it should be like that, just wondering to try and help the team nail it down.
I will pass this along, but please keep us updated.
One thing, can you try to rebind your movement to a different key and see if that stops it? If so, bing it back to "s" and if it starts again, I may be an issue with that key on your keyboard?
This has been reported, but also "solved" so to speak. The mission is still indeed tracking but now displaying, a visual bug if you will. Another OP had this issue but was indeed able to complete it. Keep at it and it should show up as completed onc…