windows 10 still has that windows 7 glitch that sometimes the taskbar will "hold" the state that your mouse is hovering over an icon, keeping its tooltip open and the highlight on
in case you're wondering the way to solve that for some reason is ctrl-shift-rightclicking on any icon on the taskbar
@squirrel I had no idea! ^^;;; usually when weird nonsensical crap happens to my pc I blame myself because it just seems utterly random and googling around turns up absolutely nothing helpful.