After upgrading, I have a nagging "Create Fence here" popup anytime my mouse hovers in a certain point, near the center of my screen. I have tried modifying the options under Enable fences (right click, left click, or both). I have tried Disabling Fences. No matter what, this popup is always there. I have even tried clicking either option "Create Fence here" or "Create Folder Portal here", thinking if once I did, it might clear whatever is happening. But, that did not work either.
This is more than a nuisance, because the popup is often in the way when I am working.
In the screenshot below, I opened Notepad and maximized it to take up the entire desktop. Then I moved my mouse (not clicking any buttons) towards the problem area, and you can see the popup appears.