2020 Random Pipe Rise and Drop showing as Large Gray Dot

Hi all, looking for some help on something I have never seen on Revit MEP before and can't seem to find any reference to it on any online forum. There are random gray dots which appear on my plumbing drawing. You can see them in Image 1 attached. I cannot select them, they do not line up with anything, they print and are definitely not in the linked architectural model. I have figured out that when you go into Visibility Graphics and turn off Pipe>Rise and Pipe>Drop, they disappear. This is shown in Image 2. So that implies it’s a physical model. But they also relocate when you change to “do not crop view” which you see in Images 3 and 4. That seems to indicate it’s not some physical pipe I have somewhere. Has anyone experienced anything like this before? I found the below link on a Autodesk help site. It's a similar issue, but not really close enough to help me.

"Users have reported that when working in plumbing plans in Revit, vertical rise/drop symbols will sometimes randomly disappear. They may display again after editing the system, but randomly disappear shortly after. Their behavior is inconsistent."
https://knowledge.autodesk.com/suppo...-in-Revit.html

Any suggestions help, thank you in advance.