If it has a membrane keypad, it doesn't squeak when pressing buttons. (Just replaced a 20 year old microwave with a new $500 one from GE. Which has a squeaky k

If it has a membrane keypad, it doesn't squeak when pressing buttons. (Just replaced a 20 year old microwave with a new $500 one from GE. Which has a squeaky keypad. A cheap $59 table-top microwave from Walmart doesn't squeak, why does this one? Contemplating a warranty call..)