While autotargeting is on in options, when I use the warhorn skill Charge anywhere in the vicinity of a mob, it will become targeted. This skill has no offensive aspects, so one wonders why it’s set to target anything, with or without autotargeting being on.
While it’s rarely a major issue in practice, if I inadvertently use Charge near a mob that I’m moving past, and it is or comes within melee range, I’ll take a swipe at it with my main hand weapon, thus aggroing it unintentionally. I’m perfectly adept at unintentionally aggroing things without the game helping me, thank you very much.