Hello there, @AJ1981 ...
That is certainly strange! To be honest, this does not appear to be anything that is a part of the core Canvas product. I would suggest that you reach out to your school's Canvas administrator or someone from their Online Learning / eLearning / Distance Learning department to see what might be going on. They may have added something to your Canvas environment recently that is causing this icon to appear in odd places like what you have shown. Also, is that icon clickable? If so, what kind of content displays after you click on it (out of curiosity)?
Hope this will help a bit. Looking forward to hearing back from you soon!