The Wishlist used to have this yellow highlighting show up when you searched for tags or titles(in the Wishlist page).
Say I searched my Wishlist for "Roguelite" it would would then show the games and display the tag with a YELLOW highlight.
Or I would search for a game name it would also highlight and sort in real time as I was typing the name.

A little while a go this suddenly stopped happening. Now it just sort whatever you write, however there is no yellow highlight.
Might seem like a small thing but the added highlighting was actually a very neat feature.