Calling processingEnv.getTypeUtils().erasure(arg) within Processor doesn't erase the type:

9-b27:
              arg: ? extends javax.xml.namespace.QName
erasure(arg): javax.xml.namespace.QName

9-b28:
              arg: ? extends javax.xml.namespace.QName
erasure(arg): ? extends javax.xml.namespace.QName

Reproducer attached.