Steps to reproduce:
1. Go to platformUI;
2. Create a content type with a fieldtype Country, and leave "Multiple Choice" checkbox unchecked;
3. Go to "eZ Platform" default landing page content, and in it, choose to create a content of this content type;
4. On its country field, choose, for instance, Åland, and publish it;
4. Now, edit the content. When it loads the value on the country fieldtype, will display as "AL", which should not.
5. Moreover, you can now add yet another country to it, although you cannot now publish the content.