Spot on. We discussed this after the Everton game (when they exploited leaving people up!) and again last night. Really don't understand why it doesn't happen, as you say, what benefit is Mane to us in our own box?
Though it has been like this for a while, Adkins used to leave 1/2 up in his first few games here, then he seemed to change it to no-one and its been the same ever since.