We have bought a new front door. It’s a composite door. Our old door was a lovely but very drafty original wood door on our 1930s house. With the old door, you needed a key to open it from the outside - there was no handle on the front. When you entered the house, the door would shut and you would feel safe as no-one could enter from outside without a key. With this new door, you have to use the key to lock it whether you are inside or outside, otherwise it’s closed but not locked and anyone can just walk in! The door company said this is how all modern doors work. Is this true? I’m now panicking all the time that my 2 teenage DS’s will leave the house in the morning and not lock up behind them!