I had not been driving for a few days and when I got into my car, water was pouring in around the back seat dome light. The back seat was soaked through like a sponge and the back floor was wet. I have an dealer-installed sunroof, which was not open (if actually closes automatically when the car is turned off). I took my car to a Kia dealer, who checked the sunroof seals and said they are tight and the drain plugs are clean. What other issue could be causing water to pool inside the roof of my car and find the lowest point, the dome light, to escape from?