How to remove unwanted bullet points
If you have used bullet points in your campaign, occasionally Outlook 2013 and Outlook 2016 will add an extra "rogue bullet point" to the end of the list.
If you're using the Drag & Drop editor, to fix this you can click onto the list of bullet points so the grey toolbar appears, then at the very far right of this toolbar you will notice a < > source code button.
If you click the source code button, you should see your list of bullet points, which is ended with the closing </ul> tag.
Paste the below line of code just after the cloding </ul> tag on a new line:
<div style="display:none;"> </div>
This should remove the unwanted bullet point.