The reason why ur door half locks With remote is because there is this nut that holds connects these two rods together that, these rods are moved by the door actuator. the nut is too big and rubs on a groove inside the door that doesn't allow it to fully lock by remote, hence when u use a key to lock it it feels harder to Lock but does lock.

Now, what u do is open up your door trim and replace the lil nut with two screws in it that joins the two metel rods, With a smaller nut