Sorry, I didn't take a close enough look at the link you provided (and I thought you were working with Elements 15). So, it looks like you may have already tried my suggestions.
If it bothers you that much, try contacting Elements support. You can start a chat session by clicking on the blue Contact Us button under the Support menu at Adobe.com. Or you can contact Support by telephone using the numbers listed here: https://helpx.adobe.com/contact/phone.html.
Thanks for taking a look. This appearantly is a very rare occurence, or it does not bother those who are having this occur. Granted it is certainly a very small blip at the very beginning of my work flow and it only takes one click eo banish it until the next time. I will keep looking for a solution but I won't let this consume all of my time.