Mord Ghost & The Inhib

On howling abyss, it is very difficult to convince a mord ghost to actually fire at an inhib, especially with a ranged character. There is something weird with the targeting of it. Towers are fine, champions are fine, but getting a champ to auto the inhib is frustrating beyond belief. They'll walk up and stare at it. They'll run around it like a maddening version of ring-around-the-rosey. But it usually takes 5-6 inputs before they get a clue and start doing damage.