I’ve never seen that behavior, either. I suspect you have malware. Or, as someone suggested, a weird lag that makes it look like edge is randomly opening.
But fwiw, i got fed up with other aspects of Windows to the point that i installed linux on my laptop, and one of the nice fringe benefits is that i don’t have distracting “stuff” going on, like pictures and news items and… Almost everything I do works in a default Ubuntu installation, and the interface is a lot like Windows, without the extra clutter.