I reported and issue a while back which you fixed. The post is here: http://www.docx4java.org/forums/docx-java-f6/dhtmlexporterng2-carriage-returns-an-the-apostrophe-char-t1112.html?sid=6b74f7dc230ebe3b43ef1249bc18f4dd
and here: https://github.com/plutext/docx4j/commit/fea8acc69eb07cee9f91d1b797f68be788052390
I have discovered that the issue also occurs when there is a paragraph with just white space and no other characters. For instance a space character followed by a carriage return. The browser ignores this paragraph completely.
Is it possible to tweak your fix for empty paragraphs to also address paragraphs with only white space?