This is something that is corrected by a clean install, as some experience this usually from just installing the update directly onto an already existing game.
There's probably something somewhere that doesn't get overwritten by the installer that makes it so the material provided behind certain boxes in the game doesn't show, but that's my guess.
Not really gotten any information about where this might originate from however just yet. But a clean install should do it for most. If you run the installer and install a copy of the game someplace else on your computer without adding any modifications it should show up as normal.