To sneak attack, you have to either 1: Have an ally next adjacent to the target creature; or 2: Have advantage on your attack, AND not have disadvantage on the attack.
I don't think the pictured scenario is a bug, I think you have advantage on the attack from being a sneaky bastard, but also disadvantage on the attack -- presumably from the enemy being in darkness or something. If that is true, you wouldn't be able to make sneak attack damage. I think it's working like it's supposed to.
Nice bug, i agree. You need to look up why the game sees you at a DA
Also, the whole sneak attack mechanic is weird.
Normally you can sneak attack ONCE...cause you are not sneaked anymore after that. So the first attack out of stealth is a sneak attack,period. Our rougues can sneak attack every round when they have an advantage.
I usually see a sneak attack as something that is carefull planned and executed and does a LOT of damage because of that. NOT something you can do in a melee, advantage or no. Our toons do not stand still during melee (otherwise no attack would really miss) thats just graphical.
A little bonus damage for every attack for chars able to sneak attack i would understand. Having an enemy engaged with another gives you a little more time to hit weak spots. Not time enough to launch a debilitating killing strike to a vital point that moves around.
Thats how i see it at least. No idea how 5e explains it.
This is all putting way too much weight on the semantics of it being called "Sneak" Attack. The feature doesn't necessarily have anything to do with sneaking. It's about fighting dirty and exploiting weaknesses in your enemy's defence.
