Hi Raiders!
Steps to reproduce this bug in a PC:
Once in game mission press Esc, select Settings, change any key, then press Esc twice ignoring confirmation message. Once in main menu select keyboard settings again and some key have been cleared, always the same keys, leaving you useless in battle, After that and reassigning ALL keys, you are not able to change follow camera.
Hope I made myself explain and it helps.
See you in the Broken Planet !!