Licences: I can select a licence which the system refuses to save
When adding a licence that isn't marked as 'Acceptable' for any category, it will show up in all licence dropdowns for all categories and can be selected there.
I think this behaviour was set in this way for keeping backwards compatibility.
However, when selecting such a licence, and clicking on 'Publish', the system refuses to save the resource.
Both validations should work in the same way.