Finally someone getting the same problem. I thought I was going crazy. I get the same problem every time but it only happens with one person. If we try and save and reload it gives me control of their character and they take control of mine. And when they join all companions switch to be grouped with them. To me it almost seems like it gets confused on who is hosting or who is who. I had a different friend join and use the problem friends character and I can then access the chest. Have tried verifying and reinstalling on both rigs and nothing seems to fix it.
