Liftgate/Back Hatch consistently immediately automatically closes after opening, and has hit both drivers on the head before able to move out of the way. More detail: to open the back, one pushes a button, the rear hatch beeps, and then it automatically opens. During this, the user often leans inside once the opening is open enough. HOWEVER, recently when the door reaches its apex, it beeps again and immediately automatically starts closing, oftentimes hitting people on the head (thus, a safety issue, and it HURTS). Sometimes one has to re-open the door 3 or more times before it will stay open. Have contacted dealer, and the dealer literally said "the manual says sometimes it won't work when it's cold out." So it's a safety issue (since it has hurt two drivers) but Kia refuses to do anything about it.