I found a solution that, while not solving the problem, does let me continue on the project. It seems that older versions of the Open Restaurant app do not have this bug. I found someone who uploaded an older version in his old project files here - https://github.com/leveson/app-development-with-swift. So while the problem persists, at least there's a workaround for those who need it now? Still, the current version needs to be fixed, or have the guide changed. Can't find any contact information to the author, so I hope this is the right place for this?