It is not possible to perform a ranged attack/use an item/cast a spell immediately after running. It takes 1 second to do so.
It does not get cancelled by an attack of opportunity or when your target run away. Although, you must start your taunt action over when you cancel it.
For in the arena, a timer has been added to: Knockdown, Disarm, Called Shot and Stealth mode.
Has been disabled due to many buggy reasons.