You are right, the text from SmartArt Shape is rendering outside the box and is inverted (upside down) when converting your DOCX to HTML Fixed file format. For the sake of correction, we have logged this problem in our issue tracking system. The ID of this issue is WORDSNET-21303. We will further look into the details of this problem and will keep you updated on the status of correction. We apologize for your inconvenience.