So Adobe directed me to this:  https://forums.adobe.com/thread/1152792  Changing the target version of the form to 9.1 in the form properties resolved the validation issue. This option is not available in the latest version of Designer though, you have to use version 11 or lower for this to work.

I'm having an issue in Designer ES4 (also seems to happen in the new AEM Forms 6.1) where my required radio button fields are not being validated.  More over, none of the fields below a required radio button are being validated either.  If the radio button is removed, all other fields validate as ex...