So I just installed this mod and send a Kerbal X capsule into orbit to play around with it. I timewarped, watched my CO2 fill up, and then an hour later the timewarp stopped and one of the crew died. Perfectly normal, except my orbit changed - before it was circularized to 240km (so I could time warp), but after one of the crew died it was something like a periapsis of 190 and an apoapsis of 270. While running on timewarp some more I noticed that every hour, the time warp would stop and my orbit would be altered, sometimes drastically, regardless of whether one of my Kerbins died that hour from too much CO2. In practice this isn't a gamebreaking issue since filling up on CO2 is hard to do accidentally, and since running out of oxygen is the end of the mission anyway, but this definitely shouldn't be happening.