Jboss Tools HTML editor not validating syntax using html5 doctype (xhtml doctype is OK) --------------------------------------------------------------------------------------- Key: JBIDE-20012 URL: https://issues.jboss.org/browse/JBIDE-20012 Project: Tools (JBoss Tools) Issue Type: Bug Components: jsp/jsf/xml/html source editing, upstream Affects Versions: 4.2.3.Final, 4.3.0.Alpha2 Environment: windows 7, java 8, eclipse ide for java ee developers (luna sr2 and jboss tools 4.2.3.Final) (mars rc3 and 4.3.0.Alpha2) Reporter: Euclides Melo Assignee: Victor Rubezhny Fix For: 4.3.0.Beta2 Attachments: html5_doctype.jpg, xhtml_doctype.jpg Editing two xhtml files in a fresh eclipse, fresh workspace, fresh default dynamic web project (with jsf capabilities): In one file, there is the xhtml doctype. In the other file, the html5 doctype. The issue: Validation (syntax) only occurs in the file with the xhtml doctype. (attached two screens showing the error)