Yes, it is. I've tried it on Facebook several times (since I try to avoid clicking on external links on the platform) and it shows related links the moment I finish the right click and copy link location action. There is some variation depending on where one clicks (on the image that has a link or the actual hyperlink), but Facebook definitely knows in most cases what URLs someone is copying to the clipboard. The first time I saw it I was very annoyed.
I get annoyed by it too, because sometimes I want to read an article but don't necessarily want fb to continue serving those articles to me. I don't really know what happens inside the Facebook machine, but I imagine clicking a link indicates you are interested in a topic. Sometimes I just want to read trash.
Yes, I tend to do something along those lines when I don't want to be tracked. To the original point, it's an annoying extra step to have to do but not unreasonable enough to stop using the site, I'm simply answering your question on why someone might find it annoying.
Over a browser Window? So If my 1Password window overlaps with my browser window, the page I'm on could sniff the entire 1Password window? Seems like a bunch of FUD..
It's not really polite to call it FUD right off the bat, especially when you're probably just misunderstanding. A browser obviously can't get events from a different app.
Moving your mouse over the window, despite not interacting with it, will allow the page to track your cursor, and could provide a surprising amount of information. That's why I wrote "over".
The parent was asking whether the "Copy Link Address" (Chrome) or similar is other browsers is trackable though, not the more general copy to clipboard.
