I don't mind the enemy moving around their melee opponent. What I have a problem with is the fact they get backstab bonuses. This shouldn't be the case because the enemy is aware of your presence and it's not because you disappear from where they are facing that you are not here anymore.
The other issue, more serious, that I have is disengage being a bonus action. It should be a full action and nobody should be able to attack the same turn they disengage.
I think its anoher band-aid fix. We have so much duct tape and bailing wire on the combat that single element fixes don't seem very easy. Id love for disengage to work like that. IF I wasnt surrounded by enemies with huge threat bubbles and so many environmental barriers like acid, fire, rocks that are 1cm high so you avoid them, and the fact that JUMP takes you further than your allowable movement...you disengage and have a high chance of not getting anywhere reasonable. On top of that, not moving through friendlies means you are adding 15 feet of movement to side step them, further limiting your disengage. Its a crap option as an action at that point - better to get knocked unconscious in a few rounds and use an action to get you back up then run away, not attack, and still get knocked out.
