Account screen is skipped in 5.600

I just switched to a new phone, both of them using K-9 5.600. On the old phone the Accounts screen is skipped altogether and the Back button brings me back to the home screen, whereas on the new one the Back button always brings to to the account list. Seeing as I only have 1 account this makes no sense, and I cannot for the life of me figure out where to turn this off. Is there an option somewhere to do this?