User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.6) Gecko/20040206 Firefox/0.8 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.6) Gecko/20040206 Firefox/0.8 if you have any HTML comments ( <!-- ..whatever.. --> ), and also having string "--" inside, HTML is parsed incorrectly - we can see comment ending string "-->" in our page. Reproducible: Always Steps to Reproduce: 1. create some HTML like [html] <strong> -- </strong> [html] 2. comment it with <!-- and --> 3. see results Actual Results: we can see printed string "-->" Expected Results: but it should not been there !!!
the -- sequence is not allowed in HTML comments per the specification