also! after reading the codex, for instance, and returning to the game, if i wanted to go to the previous page of the story itself, i had to go through all the codex that i'd previously read to get to the part of the story that i wanted to read again. i don't know if it's done that way intentionally, but if you had gone through many pages of the codex then you have to go back several times to get to the section of the story you wanted to get to (and i'm gessing the same would happen if you'd been through the settings or profile).
it's a minor detail, but i thought you might want to know! (and i don't know if it's relevant information, but i was using a mobile format while playing).