Experiencing a bug right now with oxygen. I've been sending a group of 7 kerbal's, 1 pilot and 6 tourists up to a space station to fulfill a contract but whenever I send it up 3/4 the way there the entire crew dies of no oxygen. The craft has about 30,000 stores of oxygen, the oxygen is being used by the craft. There is a sufficient amount of nitrogen as well that's also being used. I have the scrubbers for a hitchhiker and mk1-3 as well as two external ECLSS modules. I have restarted my game multiple times. Any ideas whats causing this bug and how I can fix it? I can send my save file as well as modlist if needed.
Edit: I found a reason. When I sent up a pod with 3 kerbals that weren't tourists they reached their destination the same, with the same vessel from before. Tourists seem to force everyone on the ship to forget how to breathe.