I had something similar happen to me a few weeks ago. Bad storms, windshield wipers. Few drops of leak. I had attributed it whatever rain might have gotten onto the painted part of the door as I was getting in the car. It's only "leaked" on me once (despite driving with rain and wipers multiple times). I don't know what to make of it right now. The seal looks intact. Not sure I could reproduce it if I even wanted to.