You could have a broken dip tube. The dip tube mixes the incoming cold water with the hot water. If it's broken then the water at the top of the tank gets cold and the outgoing water comes from the top.
I got an upvote warning. That's why I'm here
You could have a broken dip tube. The dip tube mixes the incoming cold water with the hot water. If it's broken then the water at the top of the tank gets cold and the outgoing water comes from the top.