[VE][html5] Error while validating role="navigation" and role="group" on HTML5 document

Error [html5]: 

1.       Bad value group for attribute role on element ul.
<ul id="group1" role="group">.</ul>

2.       Bad value navigation for attribute role on element ul.
<ul role="navigation">.</ul>

NOTE: 

http://www.w3.org/TR/html5/dom.html#aria-role-attribute


I think there is no error in the document structure because of section
3.2.7.1 "ARIA Role Attribute".


..         Every HTML element may have an ARIA role
<http://www.w3.org/TR/html5/infrastructure.html#attr-aria-role>  attribute
specified.

Best Regards
Thomas Beer