I am not sure if this is a bug or if I have something set up incorrect. I have a user that is given access to an interface without access to the base. However her notifications will occasionally send her to the base which se of course does not have access too.
I have experienced this as well, some of my notifications will bring me to the interface and some will being me to the base. We only use the interfaces in our day to day, so I am not sure why it would send us to the base.