For some reason I can't follow, at least once a day I get a message to "Try the OneNote Clipper" when I open Firefox. This only started a few weeks ago on my Win10 computer. The message is actually a new tab, the type you would get when you install a new Add-On (which I didn't do).

I just disabled the Add-On in an attempt to shut it up, but I would prefer to leave it active if it would behave. Anyone seen anything like this?