This is a problem with any keybind that has both primary and alternate keys assigned, not just camera views. I went through and deleted both primary and alternate on any actions where I had both assigned, click “Apply & Save”, then reenter your desired keybind in the primary (left-hand column).
(Not sure if the Apply & Save step between deleting and reentering is necessary, but I had some key assignments that didn’t seem to work until I started doing it this way.)