I've had 2 weird things happen so far with the Kroma-Z, both operator error. First I found vape
juice on the bottom of the unit and the coil needed to be re-seated. Then I went to bed, set it upright by my bed and when I woke up an hour later and went to have a vape the thing was covered in juice. I hadn't closed the filling port all the way or pushed it loose or something, what a mess on my hands lol. So I stayed up, fixed it up and re-filled it and it works great. NOW I am going to bed to sleep some.