Hi,
For the reward issue,
maybe Anet should take a look into previous revisions. (as you probably keep tracks of every iterations you’ve made I guess). I say that because I’ve completed Verdant Brink map with my character during first days of HoT and everything was fine.
For the fog,
Something similar happened to me several times during first days of HoT. As I used to open my map frequently to move and check, there were many moments where my my map was fully fogged. I used to just swap between each layers of the map a couple of time to fix it.
There is probably no connection with the current bugs people are talking about but I don’t know, maybe those facts will be useful.