I started the quest "The Good, the Bad and the Broken" yesterday, but had to leave the instance before I picked up all the Mech Materials Chests and Gattley Contraptions since it was time for raid. When I came back after raid, there were no chests or contraptions available. This isn't a short instance, and it has a long lockout. If you're interrupted and need to leave and re-enter the zone, it should not whack your quest updates.
I just encountered this. I managed 6/12 Sabotage in the first session, after logging I’ve got as far as Vleecan with no further Sabotage or Break items. I know it will be fixed, but I guess that means I’ll need to do the whole zone again in order to complete the quest?