Issue with pets not fighting

I've had this issue before where my pet will be standing behind me, I'll be fighting, and it's just standing there doing it's "head thing" or whatever crazy move it does when it's not doing anything... If I don't notice it not doing anything when I'm fighting an Elite boss for example, and I tap on the Arcane ability, it does it BEHIND me, nowhere near the boss! Does anyone else have this issue?

What would be nice is if there was some kind of option/button to press if you WANT your pet to fight, or hold back by you. This would be good for the pets that don't seem to have a wide range of healing. Unless when you activate their ability they heal you anyway?

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