volume icon flashes on the screen when I'm not adjusting volume
My volume icon is (seemingly randomly) flashing on the screen when I'm not adjusting volume, and the volume doesn't actually change. It just shows the current volume every time it does this.
The last similar post I saw is from 2013, so I'm guessing not...? Is this a keyboard hardware failure of some sort?
(MacBook Pro Retina, Mid 2012)
MacBook Pro