It's a common practice to highlight an element on hover state. By highlighting it, I obviously mean making it more visible than other elements.
But lately, I've witnessed the opposite trend on a couple of websites : Opacity is set to 0.5 or less on hover, which makes the hovered element less visible instead.
To me, this is nothing but a bad practice.
Or is it a new trend backed by some well known data that I'm unaware of?