Its a pretty weird situation. I can see how it could be working as intended, or a complete oversight. We definitely need clarification, and fast so we can avoid another cactusgate. A player gets a lockout by beating a trial with a group. A player can beat all 5 trials and have the lockout in their expedition window, someone else who is not locked out can join the group and you can run all 5 missions again. In fact, this worked on other missions too, not just Plane of Smoke. So long as the requester is not locked out, other people can be in group and participate who have the lock outs. Tons of people have had this happen to them more by accident than any intention to exploit. Would much rather see a return of the 6 hour lockout and normal expectations of how to do missions.