I installed tutor on a new laptop and followed the docs to install it. After running tutor local quickstart and importing the demo course, everything ran fine.
Thanks for reporting this and documenting your workaround @ToddLichty.
It’s on our radar to fix this in a future Tutor release by deprecating the tutor local runserver command in favor tutor local start, the latter of which starts all installed services (including the mfe container) by default. There’s a ticket for it here if you are interested in following along.