As reported by @hanneskaeufler, the name attribute of the Connector is missing a type declaration, causing it to be of xs:anySimpleType rather than the intended xs:string type:

                    <xs:attributeGroup ref="ssc:ABaseElement"/>
                    <xs:attribute name="name" use="required">
                        <xs:annotation>
                            <xs:documentation xml:lang="en">
...
                            </xs:documentation>
                        </xs:annotation>
                    </xs:attribute>

This likely was caused by editing error at some time during development.

While this does not make any difference in validity checks (since both xs:string and xs:anySimpleType accept any string and do not perform normalization), this is not that helpful for e.g. code generators and documentation purposes.

Proposal is to fix this as a simple backward-compatible fix, to be included in either a 1.0.2 release or in the 2.0 release if no such minor release is forthcoming.