Sneak Attack implementation is weird. I think then need to change it to be Toggle next to the Attack of Opportunity button. When turned on, you will simply deal Sneak Attack extra damage with any attack if you have an advantage. That way it will work even with opportunity attack, which is supposed to work. Also they need to to change the description and implementation to really show and deal 1d6, 2d6, 3d6 etc, because it is not same as 1d6*2, 1d6*3 (different probability distribution of results). And there is also problem you can have attack with any weapon and not just ranged or finnese. It may be intentional but it felt really weird when I was backstabing and sneak attacking with greatsword or greatclub.