I am trying to understand from a RAW point of view as to how the interaction between the spell Fog Cloud interacts with the errata'd rules of vision and lighting.
First, we have the normal vision rules for heavily obscured:
A heavily obscured area–such as darkness, opaque fog, or dense foliage–blocks vision entirely. A creature effectively suffers from the blinded condition (see appendix PH-A) when trying to see something in that area.
Next, we have the errata:
Vision and Light (p. 183). A heavily obscured area doesn’t blind you, but you are effectively blinded when you try to see something obscured by it.
As we know, Fog Cloud creates an area of heavily obscuring fog around the effect zone. According to the errata, it would seem as if being inside the fog does not blind you, hence, you can attack creatures outside of the fog with advantage as per the unseen attacker rules.
Am I understanding this correctly? An I missing something?
Please advise, and thanks in advance.