What is the issue with the HTML Standard? Background This is a follow-up to #11523. That issue raises concerns regarding security issues, code maintainability, and the complexity of aging browser code currently used for rendering XML with XSLT stylesheets. I highly recommend reading through that issue first as it includes a good background of XSLT on the web as well as the specific concerns that may lead to deprecating XSLT as the most prudent option for browser vendors. As a reminder, please ...