/src/main/java/org/htmlunit/html/HtmlUnknownElement.java
if ( hasFeature( CSS_DIALOG_NONE) ) {
if ( hasFeature ( CSS_RP_DISPLAY_NONE ) ) {
if (!hasFeature(CSS_RT_DISPLAY_RUBY_TEXT_ALWAYS) && wasCreatedByJavascript() && getParentNode() == null) { return DisplayStyle.BLOCK; } return DisplayStyle.RUBY_BASE; case HtmlRp.TAG_NAME: <extra_id_0> return DisplayStyle.NONE; } if (wasCreatedByJavascript() && getParentNode() == null) { return DisplayStyle.BLOCK; } break;