The symptom returned so I called a repair place. He cleaned the drain that I cleaned but ran very hot water both ways and recommended I discard the flexible sticky rubber ending that keeps air out of the fridge but allows water to escape.
For the door sticking closed he suggested our forceful closing of the door compressed the door gasket and so we made our own slight vacuum in the fridge. Gently closing the door worked but we'll have to wait a week or so to see if the water problem is solved.
The guy was from Cameroon and was working on becoming an industrial engineer.