Are switch/case statements broken in logic apps?

Question

I can't use switch/case control statements in my logic app, trying to add a completely fresh one using the designer shows it had an "Error loading component." and copying one in from another logic app using the code view prevents saving due to an error (requiring property 'case' but got null) which suggests the default block needs a case value, but it shouldn't have one since the default should only be used if no other cases match. Am I doing something wrong or is there a bug with this component?