diff -r 79649bf21a92 -r bf6b11347b1a src/share/classes/com/sun/tools/doclets/formats/html/markup/ContentBuilder.java
--- a/src/share/classes/com/sun/tools/doclets/formats/html/markup/ContentBuilder.java	Tue Oct 15 16:23:18 2013 +0200
+++ b/src/share/classes/com/sun/tools/doclets/formats/html/markup/ContentBuilder.java	Tue Oct 15 11:20:27 2013 -0700
@@ -41,8 +41,6 @@
     @Override
     public void addContent(Content content) {
         nullCheck(content);
-        if ((content instanceof ContentBuilder) && content.isEmpty())
-            return;
         ensureMutableContents();
         if (content instanceof ContentBuilder) {
             contents.addAll(((ContentBuilder) content).contents);