Can't Edit 1 Specific Order. Umlaut Issue Possibly?

Had a customer today say he may need to change the "ä" in his name on the order to "a" since he was having problems. It shows on the billing address correctly but the shipping area the name was cut off after that character. So I went go in and manually change it for him but when I do it takes me to a "Adding new order page" where it looks like I can create an order. But it has none of the customers information on it. I can edit other orders just fine except this one. Anyone see this? Bug?