Possible Bug - Are Ranged Enemies supposed to..

Hi,

Not sure if this is a bug or intended, but it seems bad.   When range combatants have one of your companions set to direct attack or even 2 companions in their face beating on them, they seem to still focus the player and shoot without being interupted.  

This seems like a possible bug. Shouldn't they focus to the attackers hitting htem in melee or even range combat?