Same issue here. I found out that there's a "logic" : all other PNJs side quests work fine, just Dakota Smith ones are buggy (to me), like : starting a mission triggers the opening dialogue to the previous started one, allowing it to be completed, but no completing dialogue on previous mission, or opening or completing dialogue on current mission. Meaning the current mission (or the last side quest if I do all of them) of Dakota will never be completed.
Dunno yet how to trick the game out of the loop.
Dunno yet how to trick the game out of the loop.



