A few additional bugs after orders started coming in, which we found when dealing with missing language text.
First is in the administration's Orders area, as just the constant name, not the shipping method value:
On the invoice (for printing) for the order, it is blank instead of either a constant name or a value:
And on the emails going out, it just has the constant name again:
This seems to be mainly with anything OTHER than USPS - First-Class Mail, which shows fine in all 3 locations if that is the method.