Originally Posted by Stabbey

What is being called "Backstab" is getting advantage by physically walking behind the target, who can't move or react to that because it is not their turn. Anyone can get it, without any ally assisting, even without being a Rogue. This is being complained about because it is an extremely low-effort way to get advantage and the enemy cannot react to it to prevent you getting the advantage if you do not leave its threatened area.

Don't you trigger a reaction hit when walking around an enemy?