error in html4.0 strict validator?

From: <arto.nirkko@dkf6.unibe.ch> Date: Fri, 14 Sep 2001 14:57:44 -0400 (EDT) To: www-validator@w3.org Message-id: <0GJO009031ZJ98@ubecx01.unibe.ch> · This archive was generated by hypermail 2.4.0 : Friday, 17 January 2020 22:58:24 UTC

Hi
It seems that the HTML 4.01 Strict validator on your webpage
(http://validator.w3.org) is the only version which validates
<hr /> as an error. All other versions (2.0, 3.2, 4.0 Transitional,
and also XHTML 1.0 Transitional and Strict) validate this as
correct. Somehow I think it is unlikely that only HTML 4.0 should
forbid this construct, whereas it should be ok in previous and
later versions. Is the validator incorrect here?
Greetings, A.Nirkko