If we create a content from a content type that has a required checkbox fieldtype, and we leave the checbox unchecked, a notification error occurs

An error occurred while publishing the draft

And the response in dev tools is

{"ErrorMessage":{"_media-type":"application\/vnd.ez.api.ErrorMessage+json","errorCode":400,"errorMessage"
:"Bad Request","errorDescription":"Value for required field definition 'chk' with language 'eng-GB' is
 empty"}}

Steps to reproduce

• Create a content type that as a checkbox fieldtype. Make it "required"
• Create a content of previous content type. Don't checkj the checkbox
• Click on "Publish" button

Maybe it doesn't make sense to create a checkbox as required, since it's state is either checked or unckeched. But if ezplatform allows it, then this situation should be taken care on a more pleasant way.