Charmed Pets Not Agroing Mobs
 

If you use a charmed pet it will run through packs of mobs to return to you and not agro them. Haven't tested to see if faction is an issue, everywhere I have been charming the mobs would be on the same faction as the ones they run through. This shouldn't be possible, the pet should take on the same faction as the owner.

Was the pet dotted somehow? Ive seen previously that if a mob gets doted, and then charmed, the charmed mob wont be able to attack any mobs until the DoT wears off (this would include necro snare/darkness)

This is addressed with the next patch.

Thanks