Several years later, still stuck with Rye and Sons map marker/audio on the map
I have completed every Nick Rye quest. I went to the Seed Ranch before visiting Nick at his airfield and triggered the start of his first mission there and got him as a companion. I continued with the missions involving his wife. The icon did not go away. Now I am approaching every mission complete in the region and have researched this bug. It's been unresolved for over two years now it seems. People reported the exact same problem I am having this very moment. Now, this may not be a game impeding glitch, although it might be as some reported being unable to 100% the game because of it. But a glitch none the less and I would think a simple one to actually fix. I've tried to look for modding for assistance before even thinking of posting here as it's likely going to be completely overlooked. No dice. So with a fart of a prayer, here I am.