Okay,
I checked in FF 27, there seems to be about a 1 second lag from selecting the chapter title for chapter to edit, for the actual content and the rte controls to appear.
Looking in the database itself, it looks like you used the paste, or paste as plain text option. Either one will not work right for you. You have to select the "paste from Word" to retain your formatting.
I can attempt a login as you, to see if I can duplicate what is happening. With my own login, in FF 27, I'm unable to duplicate the error you're experiencing.
Having said that, though, you may need to clear your cache (not the cookies, just the cache), then press ctrl+F5 to force refresh, and THEN try to edit and tell me what happens. Just remember, that clearing cache means you also need to close the browser and then restart it, just as you would when clearing cookies, to be certain the changes took effect.