I don't know if this is new, but I just tried to connect to the content server and it failed - no books showed up and I hit disconnect. The content server problem was me and is now ok. The problem is that when I tapped disconnect and the screen went back to the book list, all covers are gone and title and author are all caps. I went to book details and back hoping that would refresh the display, but it didn't. I exited and when I went back in immediately the covers and regular text were still missing. I exited again and when I went back in after a minute everything finally looked ok again. Here's a screenprint:
