This is an archived snapshot of W3C's public bugzilla bug tracker, decommissioned in April 2019. Please see the home page for more details.
In the documentation for XHTML 1.0 it states that content-type text/html may be used, so long as it adheres to Appendix C (Compatibility Guidelines). In Appendix C.2 it states that minimized form of tags is to be used for all empty elements. The validation comes back as valid with closed empty elements.
*** This bug has been marked as a duplicate of bug 4514 ***