I have similar issues with the heavily obscured condition, specifically with the darkness spell. Darkness for some reason only counts as magical darkness if you are in it, but if you are out of it it's just a sphere of normal darkness. Example/explanation: in my co-op campaign I'm a warlock with devil sight and the darkness spell. So I use darkness and enemies in darkness have disadvantage in melee on me cause use need some form of devil sight, ture sight, blind sight, etc. To see in magical darkness so enemies with dark vision still have disadvantage if they are in the darkness. I can still see fine cause I have devil sight and I'm heavily obscured. NOW HERES THE ISSUE! enemies outside of the darkness spell area can still target you without disadvantage as long as they have normal darkvision. Which doesn't seem right since it's magical darkness not normal darkness. I'm fine with anyone still being able to target me in magical darkness, but not having disadvantage seems wrong. Also similar issue with enemies seeing through magical darkness without hindered/blocked vision or disadvantage. So if an enemy is on one side outside of magical darkness they can shoot through a magical darkness and hit an ally on the other side outside the darkness without any vision block or disadvantage. Which also seems wrong. If you could see over it or around it that's fine, but seeing through it even while having normal vision with no devil sight, true sight, blind sight, etc seem wrong. HOWEVER this all could be an intentional choice for game balancing purposes maybe. It just sucks being in the darkness spell and all they need is darkvision to hit me normally, while I had to use an invocation, a chosen spell, and a spell slot that I have to concentrate on, and I only get protected in melee if they run into the darkness, or don't have darkvision if they are outside of it. And most enemies do have darkvision so archers and casters can attack me in the darkness spell no problem. At the very least treat the heavily obscured effect of the darkness spell as magical darkness so you need a form of special magic vision to attack anyone in it without disadvantage. But I'm not a game designer so I don't know how'd that effect balancing. Just my opinion since I have to invest an invocation for devil sight, and a spell, and a casted concentration spell slot for it to not cause disadvantage to all attackers who don't have devil sight, etc.