Ran water for minor diagnostic. Found water was coming out the back of the tub spout when the shower was engaged. Eventually I believe 5is was making its way down to the ceiling of the kitchen below. Replaced tub spout. Homeowner aware we cannot see inside wall. Told her to have us come back if the leak persists and we would credit 1/2 of today’s visit towards additional repair work. Did not see any water dripping during testing. Leak only occured previously after running the shower and waiting 10 minutes. Guest bathroom shower so not used very often.