Tabs (or perhaps special characters) are being replaced by odd characters in ePub publishing

When I publish a book to Epub out of FrameMaker Version: 17.0.3.546, I get this odd result. It seems like the special characters - in this case the bullet are being duplicated with code. Or perhaps it is the tab character. I don't know. The bulllets have been made using WingDings which normally works okay, but apparently not any more. Can it be fixed?

